Hey it has not been solved from my side at least.
good point with the joint count.
but should it not be also possible to ignore the joints that are too many and apply the rotation with setslice just to the ones that fit best to the positions?
model wise i know some models that could be tested
there are many available for free here
also microdees emeshe contains droidgirl which has already a working joint aniation module in the example