Here's a mechanic that occurred to me while discussing issues of Morality with jwarrend in another thread.
Players place their pieces on spaces adjacent to a sliding scale, then game elements move the pieces and make the scale slide...
The scale probably wraps around, and it could be pretty much anything that's got 2 sides... from Religion and morality, to political stance (this would likely be the way it would work into a game), or any other 2-sided issue.