Meh, don't really care about the absence of evil in Inquisition.
The only "evil" character I ever played was when going Sith side in Knights of the Old Republic, and never completed the game that way. It was boring to merely "be evil" for the sake of being evil, without much to no back story about why you're evil (ok, you do know you're amnesiac, good excuse to be evil right there). You're... just evil. Hummm, ok, makes sense. See someone who needs help? Stab him and steal his money. See a damsel in distress being attacked by a bandit? Shoot the bandit and take the girl's money and leave her there injured, in shock and crying (oh and don't forget to laugh at her too). See someone who threatens to end his life because his girlfriend left him? Stop as you walk by the scene and yell "Jump! Jump! Jump! Jump!". See some fat guy choking on a piece of his hamburger? Stop by his table and take the hamburger and just walk away (don't forget the coca and nod at the guy too, after all you just got a free meal, might as well say thanks!).
Those are figurative examples btw. But it's generally just seriously stupid, or not done well... or it's just true evil anyway.
And being Renegade in Mass Effect was at least sometimes funny, because it wasn't being evil, but simply being a jerk, rude, harsh or selfish (but mostly just being a jerk). I'd rather have a harsh/rude/impolite and maybe verbally-aggressive character over one that just wants to figuratively force choke people he/she doesn't like "just because I'm evil [cue in evil maniacal laugh]". Give me good evil guys in movies or in novels, sure I'm in. In games? Not so much. But I do admit that I'm saying this perhaps because no developers out there actually managed to "do evil" in a game well so far. Maybe because it'd be too daring? Too violent? Too taboo? Too risky for sales? What about ESRB's rating issues?
This is a genuine question and I might not be aware of a few legitimately-good answers. Which games out there allow you to play a "really evil" character that you created yourself? Skyrim? Maybe... to some degree, perhaps because you can kill an entire town if you feel like it. Or perhaps the GTA series because you can highjack cars and kill the driver, or kill a pedestrian or kill... wait... is it just about killing? To be honest I think that playing a "truly evil" character in a game in the veins of say... Mass Effect or Dragon Age (Origins perhaps more than Inquisition, or even more so in DA2 maybe) would be too risky because then the devs would have to let us go "all the way" and they themselves (the devs) would have to create "opportunities" that maybe they wouldn't even be comfortable creating in the first place.
This seems a simple subject but it implies more than we might think at first glance. We gamers maybe ask for it but I'm not sure if devs out there are ready to take the leap and finally give us "true evil", so evil that after completing the game you actually feel bad about yourself and you immediately want to start a new game again as a good guy to "redeem" your chosen paths that previously lead you to murder, manipulate, control, enslave and rape. The only dev studio I can think of who might allow a few of such things happen is perhaps CDP Red, maybe they will in their future Cyberpunk game. But BioWare? Not sure. Not saying no but... too risky I think.