Personally, I like the style of a Hawke or Shepard character better. Someone who begins quite defined, has a few variations, etc, and I like the dialogue wheel, but people complained about it a lot in DA2, and I knew it wouldn't be back. I still found lots of snark for my snarky Inquisitor and I was pleased that characters even remarked on my sense of humor! I don't remember that as snarky Hawke but maybe they did then too (my last playthrough of DA2 was recent but it wasn't snarky).
I do prefer the DA2 or ME style to the blank slate style of DAO or DAI, but I see no negative difference in DAI to DAO. I guess some people thought the origin story made it easier to roleplay (I did not find this easier - but I also read the Codex about my original story - something NOT provided to me as background immediately in DAO - as soon as I could access it, less than 5 minutes into the game, and that allowed me a framework for my background that I then formed a character from; in the origin stories, I often felt confused by my character, except the excellent city elf one and the very straightforward but dull human noble one). For me, in many of the stories, it often made it harder, and the lack of voice acting and sometimes baffling responses of the companions made it harder as well.
I felt like, in this game, my companions were more responsive to my personality than in DAO and equally than in DA2 (despite the difference in race and range). Which is a primary care for me.
So, I'm fine with something more like Hawke, but I don't expect it because people complained. But I don't get how the Inquisitor has less personality than the Warden. I felt the opposite. I love some of my Wardens but their personalities exist solely in my mind, whereas I felt like the voice acting, the background Codex, and the events of DAI allowed me to interact with character-making and make it a combination of my mind and the game.
I remember just one line that gave me any insight into my Inquisitor's personality. I was on my second playthrough, trying out an aggressive Mquisitor, and had the option (during In Your Heart Shall Burn) of choosing an angry-fist line that was supposed to carry the meaning, "i'm not afraid of you!" My (British) Mquisitor opened his mouth and stammered out, "I'm not.. I'm not afraid of you..." and I thought, wow, he's freaking terrified.
See, maybe the male voice acting is weak - I haven't seen it yet. The female British one doesn't do that. Neither does the female American, which is stronger than the female British on lines like that, it seems.
I don't know if I consider allowing her to be assasinated as being an evil action. Having her assasinated and making sure that no other contender would be able to take control, either by having them killed or framed, would have been far more evil (Resulting in a complete collapse of the system). I see it as being more of a "I don't have time for politics, we have a war to win" situation.
I wouldn't confuse chaos/order with evil/good. Many evil actions are done for the sake of stability. The ends justifies the means is definitely evil.
That said, you definitely can't be as much of a chaotic, raging bastard (you can still be rude, evil, cruel, selfish, etc, at various points) in Inquisition as you could in Origins, but that kind of character barely makes sense in Origins where you're a Warden, both an outlaw and above laws, and a Blight is raging the land; it definitely wouldn't make sense as head of an Inquisition, so I get the limits. But I also get why it bums people out - those 5% who play those options at all or the slightly larger % who just likes to know they're there.