STEALTH 100%
such an under-appreciated and unrepresented genre
This and cool abilites to use for stealth.
Definitely the Thief part.
I'm looking forward to the prosttutes. I saw some in a screenshot. I expect great things from this game.
A stealthy character and story. I haven't found awesome stealthy characters yet so I hope this is the one .
First person stealth game in an original setting with choices/nonlinearity stuff.
First person stealth. The fact that it is a 1st person stealth game is what caught my attention at the first place. Everything else is second place. The original Thief games are the best games that I've ever played.
I am also a great fan of realism games (tactical simulation), such as SWAT3, original Rainbow Six/Ghost Recon and the mod Infiltration. One of the reasons why I like stealth games is because they are naturally more slower paced and realistic (more realistic movement, leaning, better AI, etc).
I wonder who's gonna be the first public all stealth run?
Quotes to show how much I support this---- STEALTH PLEASE!!

and also the prosttute bit!

I'm definately going to stealth the whole game. So please please please get the lighting and shadow correct! Always had trouble trying to adjust the gamma till it feels "right" or realistic.
I'm really going to enjoy stopping time, possessing an enemy, and leave him standing in a toilet.
This raises a good question - is the npc going to just stand around in the toilet like normal dumb npc? or is he going to feel nauseuos and throw up - and into the toilet bowl! - from the effects of you leaving the npc's body? this said, the second most anticipated part will definately be the complexity of the AI. I'd like to see life-like AIs in the game. And that they don't just simply chirp "but then i took an arrow to the knee" whenever you come close.
Bioshock infinate is tackling this issue and are going to run scripted events only when the game manager "feels" that is the appropriate timing to do so.
Also small memorable details - for example bioshock's dispensary where theres a ridiculous music going every single time you try to either dispense, upgrade with eve etc. I don't mean copy this exactly but something like this in the game that is serious, laughable and memorable at the same time to give it a dishonored signature.
Also please please please do tell me if its going to be a puzzle sequence. I was a little confused in ARX sometimes whether it was a puzzle i was going to solve or not. For example that akbaa cult temple beneath the pub where you had to solve a puzzle consisting golems and doors. I didnt know that it was either a game bug or it was part of the puzzle, and left me frustrated loading and restarting the game thinking that i have missed something important. In anycase please there will be a warning or somekind....
1 haunted mission would be good too! eg haunted cathedral, shalebridge cradle etc!!!! maybe in this map, suddenly you couldnt use any of your powers except the "create light" power!!!!
as for the prosttute, if there was any "getting it on" or taking clothes off just please do it, if there wasnt please just cut it out. i dont want to waste time thinking there will be a nudity scene and half and hour later it was just a tease or a silly lap dance. after all its not like we havent seen briast before, and in the end if there was a mod, i'd just add the nudity mod on anyway. cut to the chase, either have it or don't. Violence is allowed and nudity isnt? what is this? the 90s?
also I'd hate it to be what i read on duke nukem where you have a mission to get the prosti a popcorn or food. Completely stupid.