I'm hoping Avalanche Studios cares enough about the quality of their game to hire a real writer. I guess they could just be making a similar action game to Just Cause, in the Mad Max world.
I would prefer an RPG, something with more depth and custom made Mad *avatars with character generation, at the start of the game. They could probably save tons of money, having a silent protagonist. Instead spend all their money on great writer and NPC voice actors. Also of course make it Coop, like Dead Island and they would have a major success financially and critically.