Seeing the new 8 options by unlocking rogues, priests and mages is great. Awesome.
We need more!
Void elves and Nightborne should be able to play as demon hunters.
Make Forsaken and Void Elf “Dark Templar” paladins.
Finally let Worgen and Goblins be monks.
Night Elf paladins too (already in the lore. Plug and play)
Pandaren druids. Just think of the options! Guardian being a big fluffy panda bear.