Yes but Druids had the problem that every one of their specs required a form so you would never see any druid showing off their armor while in combat. Priests don't have the same exact problem since healing Priests always show off their armor. Even now resto Druids are the only spec that the Druid class has that shows off their armor as all other Druid specs require an animal form. On and btw the the Boomkin model has still never been updated.
I like the appearance of Shadow form in it's current state, I am not sure what else Blizzard could do to enhance it's current look with out really ruining the flavor of the look. Most other classes don't have a different appearance for their different specs, and those that do only seem to complain about them. Go figure.