Yeah , that is the the only way I can think of , and that is what I will be trying to implement, when you are changing the body proportion morph , you have to translate certain bones along x axis and y axis , to make the rigging accurate , i tried doing it manually in the Animation editor and it worked, but automating those individual bones in the animation blueprint, might be a little difficult , so may take a while to get completed. I will try to work on that.