Yeah, to me the long buttocks seem to be the primary problem here. Both the bend and the side-side have a tendency to pull them down, but I think that should be fixable. Will see about the butt crack after that.

Here's a small update, only influence weight-maps on thigh bend and side-side at this point, no bulges yet and no JCMs. The long glutes problem is still quite apparent in the bottom-left image.

(Word of warning from Antonia: "Don't stick regular tape on your crotch when you take your anatomical reference shots for the gram. This is special skin-friendly censoring tape I'm wearing here, applied by trained professionals.")

-- I'm not mad at you, just Westphalian.