Thanks everyone for the feedback!
It's greatly appreciated.
To start, we are going to spend some time putting together a much better knowledge base, including individual pages for each of the extensions, and as much information as we can, tutorials, code snippets etc. I think from the feedback this is one of the common suggestions.
Then we'll look into questions. I do like the idea of utilising stackoverflow, so I'm going to do some research into how we can integrate that into our process.
We also like the idea of rewarding your contributions so we're going to have a look into how that could work for us.
Cheers
Michael