The below is not exactly a Feature Request, since it has little to do with WIx Code itself, but feel free to move it over there when you deem it so.
Wouldn´t it be a nice idea to have a Wix Code Corner, where users, after having struggled for days with a problem, paste a description and the code to their solution?
You could move it to Github, but I think that is too much. Users here are divers, a simple Wix Code corner would probably suffice. It could work wonders for new users and put less strain on your support.