I really really love the idea of having more hair styles, hair colors and skin tones.
Also, it'd be amazing to have more outfits like a Jack Skellington outfit, Sally outfit, Toy story outfits, and maybe even Aristocats cat outfits, like cat hats and stuff.
Oh, and also, make a better peter pan hat, without the extra hair added to it, just the plain hat itself, with a feather added maybe?
I do love the Edward Scissorhands outfit idea as well.