I don't know about you guys but I've always felt phpbb was kinda bad. The searching is bad, the UI is just too much of everything, and it has so many features no normal person would ever need, while the basic functionality actually related to discussion is sorely lacking.
I think the time has come to move past it. And after poking around a bit I think Discourse is the only viable option: https://discourse.tt-rss.org/
Unfortunately (or not, I'm not sure) I can't just bulk import our forum data into Discourse because it only supports mysql phpbb import for some reason. However, given the sheer amount of obsolete information here, maybe it's for the best, really.
Therefore, the plan for phpbb is as follows: I'm going to set it as read only and block new user registrations. It's going to stay up as an archive as long as it's not that painful to keep it up. All new discussion and support requests should go through Discourse.
Old forums are going to be available at http://tt-rss.org/oldforum, /forum URL is going to redirect to Discourse.
e: Current RSS feeds are going to point to Discourse.