redwing, frankcreed, i will look at your ideas later, i'm ill now and wont to spent tool much time on programming.
bosseric, suggest you can copy 'toy: set tag' to multiplr presets and say each of them to set emty value for every unnededd tag (you have to have every preset for every unneeded tag. .if you tick checkbox next yo these 'tay: ...' presets, then all these tags wil be auto erased, if you change any tag of track or just move track from inbox to library.