I'd get rid of Elezen/Elf-people as I dont feel any connection with them and the current playable classes - I mean, if you want magic you're gonna be lala or miqote moon keeper, and if youre physical you're most likely gonna be hyur highlander or miqote sun seeker, with hyur midlander being the middle-of-the-road for frequent switcheroos and PLD.
Although I am very much looking forward to the dragons aka Au'ra, I would also love to see something bird-like, with a beak and different wing styles dependant on the sub-species.