Right. And some of the early script drafts and McQuarrie sketches predating the fourth draft suggest Lucas was even thinking of having onscreen nudity like in THX 1138.
You said that already, and there’s no proof! The only evidence you have is some very rough sketches, and drawings like that always show figures as being nude so that drawing clothes over them can be easier. There’s no evidence beyond that, so I’m inclined to think it was never intended.