I think these sorts of products aren't infinitely scaleable. TGB did have too few people working on it but it may not have been big enough to support more. That said, you keep a small team and clean up the engine. You don't steamroll ahead with new versions leaving bugs unfixed, never fixing compatibility issues. The TGB community is entirely in the Garage forums. I'd like to see an independant site that can put together sample code, documentation and tutorials in preparation for the day TGB is cancelled and the forums closed.