Nice! Discourse is definitely a major step forward in terms of message board features.
My only concern would be that it feels a lot more tech-y and involved compared to tenderapp (e.g. the account requirement or the category system which is pretty unconventional if you’re used to subforums). So while I think Discourse is a great choice for development-related talk and more in-depth discussions among power users, I think it could turn out to be a step back for user support - at least in its current state.