Please!
Make it a class that has a few shapeshift abilities to slot on the bar and once you shapeshift (into cat for example) you get 4 abilities in total that can't be chosen from with number 5 being the shift-out button.

Do the stat scaling any way you want, just PLEASE let me be a shapeshifter ;_;

Edit: I don't want to see limited duration / cd on shapeshifts, metamorphosis =/= shapeshifting.

Werewolves are already confirmed to be in. That's all you're getting, this ain't WoW.

While I'm always a big fan of this type of class, it isn't very Elder Scrolls-y. Maybe they'll do something interesting with werewolves.