your thinking may be nice and ok, but it will not happen. Well not in "close" time. (maybe in 10 years)
I am always surprised how many stuff "Gizmo" should do. So many wishes so many ideas...but please think about what this developer(s) brings out in time. Testserver first 2.9 (for month) than going up on 3.0 (also testserver) but 2.9 is not going on public sever. That is strange.
more clothing, more poses, engine rework, going hand in hand stuff, etc etc and much much more....and patching..... what has really come out in the year 2023?
it will not happen in a close time. Handtracking/Bodytracking....i am sure that will need another big engine update. And it is in my opinion impossible to do cause of the way poses work. Would need a totall overhaul from the start i think.