School Boy/Girl Cricketer
You know what innovation cricket really needs: bring back Double Wicket games.
I would love to see Single Wicket and Double Wicket games brought back, and it could possibly work in the modern era. The rules for each game are quite interesting too, stops it from being a simple 'less players on a big field' kind of game. Also it could be cricket's version of footy's 5/6-a-side games for communities, and that's one thing that cricket would need. There is the 'Last Man Standing' format that seems to be quite popular among some locals.
This new proposal is too simple for any high level competition, but after thinking about it, the simplicity could be a good thing for local communities. Set up some GOALS-like arenas and use this format for local tournaments.