I’ve been a fan of Master Tracks Pro for years and years, and a few years ago got the version (6.8.4) sold by GVox. That version was a little bit buggy however, as I couldn’t find a way to delete a track, for example, and it was difficult to rename markers.
I would love to see a new version that fixes some of the bugs and includes basic right-click functionality (like the ability to delete a track). I’m always searching for a high-quality stand-alone midi editor, and while Cakewalk by Bandlab has great midi editing capabilities, it’s built into a DAW and is not stand-alone.