My idea: Instead of having a single theme, all entrants get a unique theme from the list of the most upvoted suggestions.
- It adds a fun social aspect "hey look at the theme I got, what's yours?"
- It keep things fresh while rating other people's games
- One thing I think helped make LD successful is how theme suggestion/voting builds the hype for the event. Plus it puts everyone into "game ideas mode" a few days before the jam. So keeping that aspect of LD would be useful.