Dishonoured looks good, and I like the theme of the game-revenge, but I'm not particularly fond of the sort of industrial environment that it takes place in. I think environment, both physical in terms of the landscape and the "mood" of the game is very important. I like fantasy environments like those in the Elder Scrolls or Gothic series of games, medieval landscapes with kings, warlords and magic. I LOVE those sorts of RPG games!
The only game I liked with an industrial-1800's style feel to it was Bioshock, but it was too claustrophobic, dark and action oriented with not much emphasis on character development and RPG elements.
I'm looking forward to the next Elder Scrolls game whenever that comes out.