[Mauve]

Perhaps a theme along the lines of parallel universes? Like, if [major event] hadn't happened, or if a [major event] had happened, what would [specific cat]'s life be right now? How would they act? What scenario would they be in right now? And just write essentially an RP post with them how their character would be with or without a major turning point.

This could go into main roleplay, of course, but could also branch out into the alternative roleplay, since those characters also experience major events of their own.

Just an idea! I love everyone else's ideas though - all so unique and inspiring! ^^