"So why on earth screw with the UVs???"

I've asked a time or two, and made comments about the multiple UV types; they seem to be to make money, and serve no other useful function.

Often, a character based off of a particular UV set works fine without; this means if you don't want to buy the new character (eg: Eva 7, Josie 7), but did want to buy one of the character's based on those, it would work; Daz offers refunds so if it didn't work you could return it. I've bought characters based on a particular one, but it shows as being Base Female; one such example is Camile HD for Bethany 7; states she requires Bethany 7, yet uses Base Female UVs not Bethany 7, although she uses some of the morphs, these could be manually dialled in, to approximate if Bethany wasn't owned. So it is misleading imo. So it uses the character morphs, not always the UVs.