Well your design is how Daz Studio and Genesis works as a framework and I’m going to assume the same with Metahuman once released so yes changing mesh shaping via morphs will not impact, with in reason, companion assets like control rigs or matching animations.
In Daz Studio this is refereed to as an injector shape that can create an unlimited number of characters based on the single framework and resources. It’s also how Massive, Weta, is able to create an army of unique Orcs but still make us of a single resource channel with out unique assets.
I also want to know does adding morph targets, affects Control Rig animations? And I am glad I have found your post in which you have asked the same question and FrankieV answered it very well. Thank you my friend. Can anyone over here help in searching reviews for https://www.grabmyessay.com/proofreading website because I don’t know where I can find reviews for that website.