I'd very much like to see Grommash Hellscream resurrected.
*But i'd like to see him resurrected after the events of SoO, so he doesn't have to see his son "legacy".*
The look on his face, when he sees his son, and sees how his son has followed in his footsteps in making mistakes except his son has no salvation he's a lost cause.
That look would be absolutely heartbreaking.
Edited original post - Typed on phone ended up missing a sentence.