Maybe I'm just a grumpy old-timer, but I'm not keen on the pocketmod idea. I like my books to have proper pages, dammit.
For me, making a full-blown game (including setting and advancement, and so on from scratch) is very much the point of 24RPG. I'd struggle to do that in a pocketmod... though maybe it's my expansive style which is to blame.
Regardless I'm likely to be participating again this year - can think of some ideas for any of the suggestions made so far. Personally I like the idea of a "numberless" contest.
Either than or "Non-Human Games" - RPGs that are based on playing anything except traditional human-form characters. Games where you play as buildings, countries, memes, or anything else.