[PhilSmith]

You really have 2 pretty good ideas kinda coming together. I like open-source and teaching (which is why i like testbed), and i like your competition games idea, but putting them together the way you have worded makes it seem like a mash-up server, with "Everything graal loves!". If you were to implement the level editing idea, I would hope that there would be a better idea for implementation.

Perhaps someone else here on the forum has a good idea.