Hi,
I don’t think I missed any hidden features but if I did please let me know but I really miss that you can’t lock the chord properties.
Let’s say I want C Maj 7th plus add13. I would click a chord or press a key to load it but then when I got to the next chord the properties will have reset. So if I want to keep the same sort of tonality I need to re-click all the buttons again which can get very frustrating if you feel inspiration and just want to rapidly build a progression.
So a Lock Chord Properties would be super useful so you can stay in that tonality as you keep building your chord progression.