This drove me insane as well, I just won the war and defeated all your leaders why won't you die????
Will the game allow the player to kill all of the NPCs in the game? Including NPCs that may be required to advance the story similar to Arcanum? (preferably the game would inform the player to the fact they just killed someone important in this game though) I absolutely loved this aspect of that game and I get so disappointed in games like Elder Scrolls when my um... village cleansing... gets foiled by NPCs who simply won't stay down!