I'd rather we left it as is... for consistency sake. However, if you could get the game to check folders for girls, and in each of those folders look for a Profile, Preg, Sex, Anal, folder inside each girl folder and just load all the images in those. I think it'd make things faster for modders anyways. (Perhaps not so much anymore)
Character>GIRL>SEX>01,02,03,04...
I dunno. I think it's fine as is. But this is coming from a guy who hasn't made his own girls.