Idea: Towny Random Events
We could have random events in towny, like "zombie invasions," "acid rain" etc which would make towny life a tad more fun/difficult. Could happen after a reset, and towns could opt-in or opt-out. Those who opt-in may receive benefits like meebles(or town xp, if we decide to have a system like that) if they are successful in achieving a positive outcome following the event.
Just a general idea, do with it what you will.