I don't think some games should have a major faction utility in the first place! if you want to get down to the nitty gritty the story line behind WOW Cataclysm is that the horde and the aliance have come together and are battling deathwing, in the later parts of the story you're getting quests from taurens and goblins and dwarves and everyone else so in certain parts of the story, if this game is as story driven as it sounds I would be completely ok with the idea that some part of the bad guys says "wait a minute, this is wrong!" and defects to help the exiles. or maybe there is a group of merchants that see fit to play both sides. certain aspects of a story like that would be really confusing but also enjoyable.