I've been using mp3tag for awhile, and I love it. One behavior I would like to see improved is the ability to have multiple instances. I'll sometimes forget that I have it open, and launch mp3tag on a different folder and then it uses the already open instance and switches the content to the new field. I know I can learn to just CLOSE the first one, but having multiple instances would allow it to be more flexible for the user, rather than behaving unexpectedly.
Or, maybe this can already be done, if it can, please share