Looks like they've set up a forum at Hivewire just for product requests, call The Wishlist.

Someone's already asked for advanced morphs:

http://hivewire3d.com/forum/showthread.php?386-Advanced-Morph-Dials

I really hope Hivewire does an "official" face morph pack that lets you do things like change eye size, height, etc.  I will probably buy any morph pack released by anyone, but I think Dawn needs an "official" morph pack.