Seven magisters, seven Old Gods, seven corrupt Evanuris, seven times seventy men of stone immense...
To be fair, there were 7 Magisters who breached the city because their are 7 Old Gods... They were after all, their high priests. The rest is quite interesting though.
This statue. The succubus.
She's everywhere, Emprise du Lion (titsicles), Hissing Wastes, the Fade.
Before I saw it in Trespasser I thought she was a Kossith, I'm really trying to figure out who or what is she supposed to represent, the elven empire predates Tevinter, so does this mean the origin of these statues are elven? I can't see elves allowing humans to walk around and erect statues in their realm, and I can't see humans entering the crossroads post Veil since the eluvians requires keys, the Veil destroyed some of the paths and non-elves don't really fit in the crossroads - so I can't see them just marching in and setting camp there.
Another thing that bothers me, I played the game for five minutes to make sure - these statues appear beneath Judicael's Crossing (a fallen bridge we need to reconstruct) and on a twin bridge (that was entirely broken).
If these are in the end elven statues, the bridge could've been reconstructed above old elven ruins but it is kind of weird since it is said Judicael's Crossing replaced an ancient fallen highway that led to the Pools of the Sun (which is considered sacred ground for elves) and mimics the style of the ancient Tevinter bridge it replaced.
What the crap?
If these statues appear in elven ruins but are considered Tevinter architecture what the hell does that mean? It was said Tevinter was built on the dead bodies of the elves and that they stole a lot of their knowledge from them, but why would these statues be part of what they stole?
Perhaps it is a misinterpretation by those who rebuilt the highway? Perhaps there is a deeper connection we are unware of?
Perhaps the level designer recycled assets? I doubt that because they had to put extra effort to create the titsicles or the waterfall cascading over the titsicles lady in the shattered library. It is easier to just put more rocks there, or to just put Mythal's statues.
As for Titsicles (I rather IcicleTits, rolls off the tongue nicely
) I'm also curious. We know that Magisters had Qunari (Kossith, I'll get to that in a second) slaves at one point because of the Mason's Tales.
Freed are The Slaves
Sacrifice
Both Freed Are The Slaves and Sacrifice depict horned beings with two masons having worked on the mosaic, one much older than the other. The old part had been carved over with new forms to hide specific details.
I believe the old carvings are very old indeed. The Kossith arrived in thedas in -410 Ancient... 15 years before the Magisters entered the Golden City.
The titles of both Mosaics Sacrifice and Freed are the slaves... Seem to hint at "sacrifices" used for blood magic, which we know was sorely abused in ancient Tevinter, especially in preparation to breach the Golden City. The slaves are Kossith in my opinion, who's (dragon) blood would fuel spells with even greater effect, given its nature.
It makes me wonder why the Quanri left for so long (1000 years, give or take) and came back ready (in 6:30 Steel), as if knowing they had something specific to Conquer and change under the rule of the Qun.
What if some Kossith, who saw and/or experienced what the Magisters did, (Enslaving and sacrificing their brethren, as well as the consequences of breaching the Golden City) were able to escape and sailed back to their homeland to warn the rest of the Kossith.
Sten as the new Arishok of the Qunari, mentions to King Alistair that the Tome of Koslun also speaks about the ancient Tevinter Imperium and the Old Gods. He explicitly says that "the Old Gods were like unto dragons, as the first human kings were like unto ordinary men".
Now I addressed this a little bit in my OP, but why would Ashkaari Koslun write about the Old Gods in the Tome of Koslun?
Because he was part of the Kossith who came to Thedas in -410 Ancient. I believe what he saw gave him a mission and a new perspective on what he thought he knew. Everything he described in his Tome was about what he saw in Tevinter as well as his own culture.
i.e. Long ago, the Ashkaari lived in a great city by the sea. Wealth and prosperity shone upon the city like sunlight, and still its people grumbled in discontent. The Ashkaari walked the streets of his home and saw that all around him were the signs of genius: triumphs of architecture, artistic masterpieces, the palaces of wealthy merchants, libraries, and concert halls. But he also saw signs of misery: the poor, sick, lost, frightened, and the hopeless. And the Ashkaari asked himself, "How can one people be both wise and ignorant, great and ruined, triumphant and despairing?"
So the Ashkaari left the land of his birth, seeking out other cities and nations, looking for a people who had found wisdom enough to end hopelessness and despair. He wandered for many years through empires filled with palaces and gardens, but in every nation of the wise, the great, the mighty, he found the forgotten, the abandoned, and the poor. Finally, he came to a vast desert, a wasteland of bare rock clawing at the empty sky, where he took shelter in the shadow of a towering rock, and resolved to meditate until he found his answer or perished.
Many days passed until one night, as he gazed out from the shadow of the rocks, he saw the lifeless desert awaken. A hundred thousand locusts hatched from the barren ground, and as one, they turned south, a single wave of moving earth. The Ashkaari rose and followed in their wake: a path of devastation miles wide, the once verdant land turned to waste. And the Ashkaari's eyes were opened.
I believe this is why he developed the Qun. He was said to be a traveler.
Given all these hints, I think it makes sense. There are still a lot of gaps to fill and I'm planning to make a post about The Kossith, The Tirashan and Kal Sharok, The trinity of very weird. very mysterious crap and compile the info we have on them.
Anyways all this to highlight IcicleTits. I also think she was Kossith. perhaps not. If she was present even in the Elvhen times, it might represent the oldest "sin" as Solas mentions that the only thing older than fear is probably desire.
It could very well have been a developer design choice, but like you said, it seems too intricate of a detail to add in these specific places, especially if it could add continuity issues to the lore.
In fact to relate to the Qunari invasion, particularly of Par Vollen, the ancient humans who were said to have created the pyramids found there did not struggle when the Qunari invaded. In fact, they willingly converted. A race said to be quite scientifically and technologically advanced put up no resistance. Why? It is speculated to be because of what they found inside the pyramids. Here is a description of the pyramids themselves as well as what was found inside.
"Amazingly, the pyramids' proportions are mathematically perfect. Since their alignment is so precise, one suspects they served some scientific purpose. Observatories, perhaps? Andvan Therastes has observed that the shape of the Par Vollen pyramids seems perfectly to match the constellation Solium"
Solium Codex:
The second interpretation is that this constellation originally represented Elgar'nan, the head of the elven pantheon who was also known as "Eldest of the Sun."
Ok, me emphasizing the "head" of the elvhen pantheon is stretching it. I know they mean the leader at the forefront, yet I still find it ironic that this detail is present when talking about the Solium codex which the Pyramids supposedly match perfectly, where "tall, horned (head) figures are depicted, always in a position of authority and respect. (shaped in their maker's image perhaps?)
"We know more of the pyramids than we do of the humans who built them. The Qunari came to Par Vollen as conquerors, but there is no history and little sign of battles fought on the island's shores. A civilization that could build such vast cities would surely have defenses, armies, perhaps weapons alien even to the Qunari. So why is there so little proof of resistance?"
"One answer may lie in what remains of their temples. Beneath the leaves and vines covering the walls, you can still make out the stylized carvings that adorn them. The paint has long since flaked away, but the silhouettes are clear: intricate sea creatures, shipwrights, musicians, archers, and kings. Here and there, odd figures are depicted, tall, horned, always in a position of authority and respect."
"What were these horned figures to the ancients of Par Vollen? Priests, ritualistically crowned? Heroes? Gods, perhaps? We may never know the truth. But when the Qunari arrived from the sea, horned and carrying the word of the Qun, perhaps instead of conquerors, the people of Par Vollen saw an old legend returning to them."
What made me think of all this, is the damn mosaic I posted, inverted...

Do they not look like horns to you? As I mentioned on page 5... Par Vollen could have been worshiping Elgar'Nan who perhaps had horns, or wore crown in that stylistic manner. We also have no idea what led to the Kossith being changed, what made their blood "polluted" or why they are said to be a "mistake".
Anyways, food for thought guys, let me know what you think.