This is just a suggestion/request for some future version.
I've seen in some other topic a preview of the upcoming hair system and it was polygonal hair (so hair as a geometry). It looked good and hair like that is simple to export but I'm not sure if some people wouldn't like to make their own hair using some of the options in their 3d editing tools (like Hair&Fur modifier in 3DSMax or Blenders Hair/Fur & Feathers or some other particle systems). For those people it wold be nice to have a premade skullcap to "grow" hair from. It's not that difficult to make one from the existing model but its sometimes take a lot of time when the head is posed in strange ways, it would be a perfect timesaver. The skullcap could have some targets to make things like characters becoming bold (at the top or from the forehead).