Just suggesting an official Mp3tag subreddit, even if not active, but perhaps with a few sticky posts or descriptions pointing to this community. So that Reddit users could be directed here, even those who are only searching for general terms like mp3, mkv, matroska, metadata, tagging, etc. There are vast sub-communities there.
That's not a bad idea.
I understand the want to keep all knowledge here at the MP3Tag forums, but I dare say having links from there, to here, would drive a lot of traffic (and so, new users) towards these forums.