This is an excellent initiative, and I commend you for taking it. One of the gripes I had about HF20 adoption was the lack of rigorous testing. While that's not directly addressed here, something like this community hub is going to go a long way to working out issues that would otherwise arise if new features are folded into a future hardfork. The testing will already have been done on the back end and integration will already be addressed.

Excellent job, man. Keep up the great work!