I can definitely see how this is frustrating! The bright side though, is mesh is VERY new and stll in development. Many designers are sticking to the standard sizing, as well as only a few sizes until they truly get the hang of how mesh works and functions. The deformer can also help, but I know it still has a few glitches as well. Give it some time, I've seen more and more curvier items begin to make appearances, and I think in due time you'll have just as many choices as the less curvy avatars! Best of luck! <3