Nice model, interesting concept.
Little thing I noticed. Attack-2 of the unmounted version has the model jump back and forth in an unnatural way (it looks like Root makes a little jump but the way the legs are flexed doesn't connect well with it).
I've only seen this in the viewer. Naturally, it should be verified how impactful this thing is in-game before thinking about fixing anything.
I recall having similar issues with models in the past. These don't take much to fix.
Cheers