Someone suggested that I check out the Altcoin discussion. I will post over there. Thanks again.
Altcoin discussion is usually full of spam, though. Maybe you can try the Service Discussion board or somewhere else. I guess it depends on what topics you're discussing; might as well make a separate thread if the topic is different enough. Personally, I never see a thread where the discussion participants is only developers, but you can try your luck. If it's related to the forum, then Meta is also an option if you build stuff like a forum stats database, post archive, etc.