Um, are there many examples of consistently and genuinely honorable anything in Dragon Age? The scarcity is not really limited to dwarves. The kind and noble human bard is a retired assassin/spy. The knight in shining armor is tainted with monster blood and part of an organization with absolutely no ethical standards or guidelines, after training for another organization of drug addicts and religious zealots. The elves are ex-slave berserkers, or blood mages, or assassins. The qunari are absolutely honorable up until the point where honor doesn't serve the purposes of the Qun, at which time they start killing people, stealing things, and setting stuff on fire. Hell, the only character I can think of off-hand who was consistently "honorable and law-abiding" is Aveline. Pretty much everyone else, even the goody-two-shoes characters, dipped their toes into shady business once in a while.
That may be so, but then again the closest thing to unambiguously "good/noble/honorable" characters this franchise can muster have been the "Knight in Shining Armor" types, who were all human. The whole stinking Cousland family, Aveline, Cassandra, etc. I would kind of like it if we'd have a "knight in shining armor" type (even one who's still flawed and complex, like Alistair and Cullen) who just happens to be a dwarf, or elf, or whatever.
Regardless, my original point was that I think Blackwall as a character, and his character arch, would have been much more interesting had he been a dwarf. Before he's outed, a lot of people (myself included) kind of felt, "Oh, another 'Knight in Shining Armor'-type human warrior companion?" When he's outed as a former criminal, it moved some people, but it left others kind of cold. Some people (myself included) felt Blackwall was so boring to begin with that they didn't really care when he was revealed as a liar. I personally think being a dwarf would have made him more interesting to begin with, and his character arc of struggling between appearing honorable and being honorable for real could have been used to explore some facet of dwarf culture, the dwarf plight, and possibly connected to dwarf society's eternal struggle with the appearance of honor verses genuine honor. I think it's an interesting theme worth exploring, but it's squandered on an average human guy with kind of an average story.
Plus, like I said, while I love dwarves, I just kind of wish BioWare would branch out a little more from their comfort zone and give us dwarven companions (besides Oghren) who aren't just wise-cracking rogues. Don't get me wrong, I love Sigrun, Varric, and Harding, but 2/3 dwarf companions being wise-cracking rogues, and 3/4 major Inquisition dwarven characters (Varric, Harding, Bianca, and Dagna) being archers has kind of left me wanting more. A warrior dwarf doesn't have to be a Gimli knock-off, and a dwarf companion doesn't have to be a snarky rogue to avoid the Gimli stereotype.
Does that make sense?
Anyone care to feed me their headcanons about Brosca's father and Aeducan's mother?
Brosca's Father: This is embarrassing, but I didn't know about Brosca's father on my first playthrough, so I headcanoned that Rica and my Tatia were the results of a failed attempt at noble-hunting. I headcanoned that Kalah was a noble-hunter when she was younger, and found a rather reluctant noble patron who was rather pompous and self-absorbed and just wanted a son to name after himself. Then Rica was born. He then grew impatient and gave Kalah one more chance, but when my Tatia came out a girl he dumped her for another noble-hunter to give him a son. Kalah then sank into despair and started drinking her sorrows away (and abusing her daughters out of resentment for not being boys), and Rica and my Tatia had to get by on their own. This was partly to explain why Kalah seems to favor Rica (since she resented my gal for costing her everything), and partly to explain why my gal starts off the game as the more "tomboy" of the sisters, and uses her muscle to make a living instead of her legs like Rica--because part of her has internalized the sense of blame from her family; "If you'd been born a boy, we wouldn't be caseteless."
Then I made a Brosca who actually talked to Kalah and Rica longer than two seconds, and learned that it's canon that my gal's father was a fellow casteless who wanted to leave for the surface, but Kalah was too scared to go with him, so he left without his family, so she turned to drink to forget. Whoops.
My second Brosca, "Patches," is much more optimistic and big-dreaming like her father had been. I headcanon that he didn't abandon his family, he just meant to go up first, make a decent living, then come back for his family. Show Kalah the surface is livable by example. He was killed on the road by bandits not too long after, so now Kalah and Rica still believe he abandoned them, with only "Patches" to fulfill his dream.
Aeducan's Mother: As others have said, I headcanoned that she was a casteless noble-hunter, which is why my Aeducan is more sympathetic to the common folk. 