Plus, they could totally be retconned into Druids with Gryphon shapeshift models. In Legion there's an artifact quest where you have to enter the Emerald Dreamway from the Hinterlands and in there you get your new form from Ela'lothen <The Moonspirit>. Ela'lothen looks like this:
The cat form you get looks like this:
It would be ridiculously easy to retcon the Hinterland Wildhammer having Ela'lothen being a part of their culture and learning Druidic powers from her.
Failing that, have Wildhammer Hunters start with Feathermane training, and I'll actually roll a Hunter!