All of my champs are one extreme or the other, 100 femininity girls (usually bedicked) with DDs to GGs (usually not bigger) and big butt in the 8-12 ranges, or 0 femininity manly men with beefcake chests and 2s in hip/ass (but the occasional bubble butt even so, with inspirations from Vaush's description, the ass being a serious muscle after all). I love femboys and gurls alike but I want to fuck them, not be them so to say, so my experiments into that tends to be fairly short lived.
Both ends of the scale also tends to be very fit, amazon/barbarian or bodybuilder physiques, I kinda dislike how both Bimbo Brew and Succubus Milk seems to imply the ideal perfect female forms are soft and cuddly, now I like me some soft and cuddly make no mistake, and the Amhri type of plus sized girl with marshmellowy curves are a lot of fun, but sweet washboard abs and thighs that could crack a skull on a sexy girl be that Az or Anni makes my knees weak, so that's what I'm assigning to my own characters even if I'd go either way for others (as well as basically flat chests and slim butts etc; there's a lot of potential beauty in a lot of combinations, again this is just for my characters specifically).