Thanks for the kind words! :)
The main reason I'm selling is that I've been trying to find a Web Developer role for quite a while now without much success, so I need to free up some resources right now. Otherwise, I would probably continue working on these for longer.
So I'm not sure what's next. A new CMS would definitely be an interesting challenge after all these years with Q2A, but not sure I'm going trough that route right now.