I think DA2 and DAI had much more interesting stories, and visuals. DAO introduces some very interesting lore, characters and situations, but the badass battle motif didn't feel that special to me. Your character is pretty much forced to be metal (story may feel somehow odd otherwise) - dunno again why people praise so much about roleplay options in DAO compared to sequels.
However Bioware has been able to handle scenes with suspense excellently, It'd be nice to see some more of that. It's violence that isn't my cup of tea. Then again violence is something that happens in this setting, and it easily gives you something you wanna oppose, unless you want to relish it during evil playthroughs (I wonder how much diplomacy and badness are available in the future titles...). Hopelessness is just silly motif, why'd you wanna finish the game at all. I appreciated in DA2 and DAI how it was possible to find something your character can genuinely care about or think highly enough of. Much more stakes when you wish to protect it. (I don't mean LIs, they're adults who should take care of themselves. I meant moreso the world.) While I think added darkness there would had not been absolutely necessary, it wouldn't had worsened it or been out of place either. As long as it's (storywise) unrealistic violence enough to not directly remind players of the specific news that unfortunately happened the same day they play the game, and it's something more imaginative and thrilling instead, I'm game.
(Baw, I haven't played anything by Bioware before Dragon Age and Mass Effect! It's hard to imagine what it was like if it wasn't all like DAO and ME1.)