i havnt seen anyone mention the OG GOAT Broxigar. the original badass.
i also want to see Emperor Shaohao. His spirit sort of lives on in pandaria, and it pops up on the timeless isle, but id love to interact with him some more.
and to totally left field this: Galakrond the big daddy. and the wild gods that have been killed like Hireek, Torga etcs.
oh and Ga’nar, i want to see Thrall interacting with Ga’nar.