I know some people think this is scary.

But all I see is this,
-snip 'cause huge image-
Maybe, but I find that's partially a graphics issue. Imagine, if instead of looking like smoosh, you could see the old, crinkly, peeling skin, the sharp fangs, the brain sitting in its head. It'd look a lot more disgusting, and less like Pizza the hut.
Here's something I don't like about darkspawn and the people who talk about em. It comes down to a choice between the Putty Patrol in DAO, or the Goblins from Lord of the Rings. Either one being faceless badguys who exist solely for your to chop them apart. In DAO they looked completely generic with their physical apperance making no sense, (Seriously, Genloks=Green Goblins, Hurloks=Pizza the Hutts, Shrieks=Skeleton Werewolfs, just why?, Qunari=Ogres, why are they purple?).
In DA2, they at least looked unique, but that's about it cause they still looked dumb. But at least they all looked like they belonged to the same breed of plague carrying monster. There's nothing about them that has, at any point, been either scary or intimidating or good aesthetics. Period. Anyone who thinks there was is lying to themselves because they desperately want to cling to the memory of happier times in their life that Dragon Age Origins represents. That or these are the kinds of people that showing them the canon fodder from power rangers would make them crawl into a corner and weep with terror.
Sounds mean, but its the truth, and sometimes the truth hurts. Now lets instead of bickering between a melted pizza and a twitchy junkie, try and make bioware make an actually good looking darkspawn for once.
I actually think the Darkspawn in Origins were a bit better actually. They didn't just look like sick people. Oh no, sick people, look out, they're going to cough us to death. You could tell this plague seriously fucked you up. Your skin utterly changed hue, body features began morphing, you began to decay as well - and that's just the start of what you can tell. It actually gave some weight to the Darkspawn taint, as it wasn't just turning into a ghoul - the sick people we could see. If you were caught and transformed into a darkspawn... Yeah, you were getting majorly fucked up. They were still recognisable as their races - Dwarfs the short and stocky ones, humans the pretty average ones, elves the thin and lithe ones, qunari the giants with horns - but they were obviously deformed.
DA2 didn't make them look unique. They just looked like textbook anime enemies I swear I've seen them as 'generic scary enemy' in half the anime I watch, but they were better animated and didn't look like they were doing a comedy routine, unlike in DA2. Hell, the entire game tried to adopt an anime aesthetic near as I could tell, and it just looked retarded. Reading another thread about the Envy demon turning into you... Bioware really have been watching too much anime. Step back from the fullmetal alchemist and go more Tolkien. I love anime, but you gotta leave the Japanese to do that, and at the very least keep your games consistent.
Ignoring the good aesthetics part of it, as aesthetics is 100% subjective - you will find people who hate what you love, and love what you hate - I'm really struggling to see what you think would make them look the part of 'scary'. Really, I don't think ANYTHING looks scary if you look at it in the daylight. I could get picture after picture of horror characters from movies, and point out how they just look stupid rather than scary, but you can do that yourself. The other option, which most films seem to try and use to bolster their 'horror' rating, but really has nothing to do with horror, is to use excessive gore. People's limbs getting cut off, blood flying everywhere, chest bursters. Its not scary. Its disgusting, but its not scary. ****** surgeons go through that on a day to day basis.
What makes things scary is less their own aesthetic, and more the atmosphere. You need the music, the sounds, the lighting, and a setup that shocks the view/player. Kind of like in some video I saw it mentioned for a game's design, they had fires be a safe area for most of the game. No scary enemies would show up near the light of the fire, so they trained players to think they were safe. About halfway through, after a stressful battle, the player would get to a fire and relax a little to wind down from the fight. Then they'd run into enemies and go 'oh ****', as what they expected to happen wasn't what did happen. Poorly explained by me, but you should at least get the theory from that. There is no design for a character you can make that'll make it look scary. Its all about the atmosphere surrounding that character. I mean, slenderman and amnesia are known as 'scary' games. You look at the character designs and tell me if they look scary, or comical. Comical is the answer. Its the whole atmosphere that builds them to be scary.
And with that, I don't see any enemy in Dragon Age ever being truly scary. Why? Its not a horror game. Its not like Dead Space, which coincidentally also isn't that scary as its too predicatable. "Oh look, a vent. I wonder what's going to happen when I walk near it. Certainly not some enemy will jump out". It does, however, work reasonably effectively with its atmosphere to feel creepy at least. But that's not Dragon Age. Dragon Age is an adventure. We play it to play Lord of the Rings, not The Ring. For this, I think the Darkspawn need to be made to look Intimidating, and a little creepy, more than 'scary'. Dragon Age Origins accomplished that best. You saw an Ogre, and it looked intimidating. It looked strong. Genlocks, whilst small, also looked somewhat intimidating, largely due to their facial expressions in cutscenes conveniently enough. Hurlocks... That Hurlock war cry in the Ostagar cinematic, that's all. Shrieks looked dangerous, and creepy. In DA2, they looked like jokes. In Inquisition, they're barely differentiable from normal bandits. Of the lot DA:O had it best, updating the graphics so they looked less like blobs of smudge, and more like actual decaying and deformed creatures, and I think we'd be well on our way to having decent darkspawn. Would they be 'origibals'? Maybe not, but I don't see why that matters. Originality for the sake of originality is one of the worst crimes you can commit in design. You end up with things looking stupid, because you tried to be orijinelz. Memes, tropes, and 'generic' designs exist for a reason. They work. They're identifiable, they're reliable, and whilst they get no points for being 0|21G1|\|@75, they do get points for actually being what they're trying to be.
Additionally, if we're talking originality, Dragon Age is hardly a bastion of it to begin with. We have Undead [Generic as ****, no matter the backstory you give them], Tolkien Dwarves and Tolkien Elve's [Only the very specifics of each is different], we have demons named after sins [Oh so original. Its not like 90% of anime uses that trope, let alone other media], we have the 'spirit world', also known as the fade, which is also conveniently mixed in with heaven. Well, not like that story hasn't been told for the last 2000 years. We've got mages, which themselves are generic, but also in a medieval setting, which is the epitome of generic for fantasy, we have stereotypical Western Dragons, we have the generic RPG game class set - warrior, rogue, mage - I don't think I need to go on. Dragon Age is Dragon Age, and those who love the game, love it for what it is. Its a homage to tolkienesque fantasy and RPGs, and a well made one. It doesn't need to be 'original', especially seeing as when it tries to be it often does more harm than good, largely because its trying to be original for the sake of being original.