Hey, if they want to have a LOT of sales, here is an idea: Do a virtual version of Peter Molyneux using Milo technology! And then position is a sequel to Close Range!
http://www.vgchartz.com/games/game.php?id=34303®ion=All
Throw in the voice of the Team Fortress 2 sniper... "Boom, head shot." and you likely will end up selling a lot of copies.
Another option, to position for the tween girl market, is that you have Peter as a model in an Imagine game for Natal. You play fashion photographer. "Boom, head shot" ends up having a more family friendly angle to it.