Grom Hellscream or Varok Saurfang?
I’d love to see either of them added as a Melee Assassin (in the same vein as The Butcher). More recently, I think I would favor Saurfang-- his BfA character design/armor is pretty epic. The Grommash who appeared in WoD kind of left people with mixed feelings, and I always preferred WC3 Grom.
If it came down to one of these warriors being added to HotS, I think Grom would be chosen. But, it would be a shame if we never saw Saurfang. Perhaps his appearance could be added as a skin or something.