You could have two "permanent" states: one activated by the thumbstick, to show rightThumbAnalogNeutral. (you'd currently have to have that duplicated for each axis direction but I will hopefully add an "any axis" trigger soon). The second permanent one would be activated by the buttons to show rightThumbBtns.
The thing with "permanent" states is that they alter the default visibility, so they would go behind any "while held" states and appear once they deactivate.
Either that, or you could have all the current states being "permanent" instead of "while held", which would mean the thumb just stays in the last position it was at, but you wouldn't have either idle pose then.
It's definitely not ideal setup, but that's currently how it could be possible. I like your idea of the "after" trigger, I'll see if I can add something like that soon!
