Hairstyle unlocked for all races is something I'd like to see as I feel like the current system is already a shallow way of providing "racial uniqueness" to races. SE, if you want to add uniqueness to races, how about you give them something a bit more... intrinsic to them?
Idk about you but... hair is hair. Whether you're a miqo'te or a roegadyn should not dictate whether or not you can do your hair in X or Y style.