He already released Dark Shaman/Fel Orc Shaman. There is a Fel Orc Salamander rider which is the Outland equivalent of a Kobo rider. He also has released Fel Orc Deathshaper (Necrolyte) and a Warlock type hero, Fel Orc Heresiarch. If not him I’m sure someone will come out with wolf rider variants however canonically I don’t think there were very many wolfriders left but a few clans that continued breeding wolves like the Bleeding Hollow clan you see in WoW TBC. The Fel Orc Shaman he created would be respectively associated with the Bleeding Hollow Clan but can be used universally for other clans. Deathshaper would be Shadowmoon clan.