Glad to hear of more progress for this!!
Still thinking of ways to make FM instrument patch creation more fun and user friendly. Ideas welcome!
Honestly, I don't mind FM editing the way it is, because it may not be easy but it gives you the depth that you need in instrument editing. It's like the tracker maxYMiser, it was super hard to get into because the UI is pretty crazy, but once you get over that steep learning curve it really does give you all the intricacies you could want. Just my opinion though.