How old of a design do you mean? I haven't seen a design change in... the entire time I've been tracking this (which has been longer than months).
Granted I haven't checked the recent fix versions. I didn't encounter bugs.
So you mean you prefer slender guys. As I recall, there's too much investment on Asterion sprites because of the dress up mechanic, which is why they stuck to only one body type for customization and that's the fully healed one. At best there could be a mod that allows to stick to the damaged sprite for the whole story, but cgs, expressions, and customization wouldn't be compatible to it.