If you like mini games then yeah working on one of the gameplay settings probably makes sense. There are quite a few of them at this point with a few proposals already, GooKeeper included, but you're free to also submit. This may also be one of the few areas where it might actually make sense to consider submitting two proposals for different gameplay settings - the items are relatively similar and not too hard to swap between, often ending up using some of the same module dependencies anyway.
In any case yep grab a workspace, some modules, some tutorials, and poke around! Say hi on chat sometime when you have a little while to hang out (occasionally it can take a bit of time before somebody notices activity)