I would very much like to see some ponies with tattoos. Yup. I'm a wacko. They already have symbols. I still think quarterback could have a heart tattoo with his girlfriend's name. Or a punk boy with a Mohawk and tattoos, maybe a piercing. It's something I haven't seen outside of pre existing characters.
Well done holiday ponies, mommies or babies of Hasbro ponies that do not have one or the other, unmade characters from G1 canon-ie Lancer from MLP Tales, alternate Sugarberrys, other generation Sugarberrys (currently seeking G4 Baby Sugarberry, G2 Sugarberry, and G2 Baby Sugarberry), G4 characters to G1 and vice versa, OCs, hard to find/expensive Nirvana ponies like blue Italian? Lickety Split. I have a whole list in my wishlist with specific customs that I want.