Feature Request: Harp and Custom Playback Technique Categories

I would love to see a dedicated Harp category of playback techniques be added.

Taking it further, it would be really nice to be able to create one’s own custom playback technique categories, and to be able to toggle categories on/off for streamlining workflow. (Apologies if one or more of these features already exist and I simply haven’t found them.)

(N.B. — I mean categories, not the techniques themselves, since that functionality already exists)