Once Viera and Hrothgar implemented fully in their intended entirety, along with the other races and them getting upgrade to the character customization system, I can definitely see this happening it would LOVE it!!!!

I'd like to see a tiny fairy-like Viera clan a full on demonic looking Au'ri clan, a very feral looking Miqo'te and Hrothgar clans....Uh, that's all I got off the top of my head. Maybe deep cavern Elezen (like the ones from Skyrim), short and stubby dwarf looking Roegydan and.....a middle ground Hyur between Midlanders and Highlanders or maybe even a "Lowlander" Hyur, if such a thing exists.

As for Lalafell, I'd love to see an dark and vicious looking version of them based off the Man-Eater Qikirn since they're the race who always gets picked on and eaten by monsters. So why not have them do the same in return to said monsters? Like how in that one Jurassic Park movie where the one bad dude was picking on a tiny dinosaur and minutes later he got torn apart by a horse of them. xD