With the bones being so obtrusive, it really does mean that it will not be able to be animated outside of UE4. Which means that all you can do outside of UE4 is (a) render, or (b) alter the mesh shape outside of Meta Human Creator. Does anyone think they can beat the render power of UE. And so with that, what’s left is the idea that Meta Human Creator will not be giving you the shaping features that you will ultimately want. I think that really the latter may wind up being the whole point of this - to shape beyond that which Meta Human Creator will likely itself allow.
Well, then credit here to all - returning back to UE4 with all functioning parts is an achievement!