While I might occasionally enjoy seeing things burn, in CRPGs the feeling that the party's actions were not in vain and led to the results desired by the player is somewhat important. Not necessarily hugging the xenos and singing kumbaya together, but leaving the world less ****, than it was at the start of the game. That, and the combat system, which I am ambivalent about - a bit too many encounters for a turn-based one. I suppose, I would not mind a Souls-like in the WH40K universe, though.