If you haven’t seen it, today’s Penny Arcade is gunning to be a mouse guard hack. They’re angling to do something different so they’re putting up samples of various comic stories they’d like to do and letting people vote on their favorite. There already seems to be a groundswell of support for Lookouts so maybe we’ll see more of them.
In the meantime, it’d be easy to kit-bash it for Mouse Guard. Probably make a good game for kids who didn’t want to play mice.