Maybe "Mudcat pointless brawl" would be the right heading for this thread.
Clearly, if a thread is headed Tavern, some people are going to assume it's one of the jokey lets pretend threads. If they like those, but don't like live song sessions, they'll waste a couple of seconds finding out. On the other hand, if they don't frequent the Tavern threads, but might like the song sessions, they might miss out.
It makes sense to use another name, though I can see the logic in using the image of a singing boozer to indicate the desired ambiance - but either way it hardly seems worth anyone getting their knickers in a twist.
If anyone wants to go to the trouble of setting up something like this, I think we should be grateful, and not quibble if there are a few teething problems or idiosyncrasies. If you want to do it different, do it different. Pick up the ball and run.
I've always like the term "shebeen" - "pothouse, unlicensed house selling drinks" as my dictionary puts it. As current in Ireland and South Africa, two good musical countries. And I like that word "unlicensed"...