Once upon a time, leveling up a druid was much more difficult than it is now, and arguably more fun. Each form had a class quest to go with it and the Moonglade teleport spell was used to get these quests, as druids needed to speak to the druid trainers in the Cenarion Circle in order to advance as a shape-changer. Granted, the Aquatic Form quest was a royal pain, but it was a rite of passage that I thought made sense. There were no daily quests, nor was there repeated training as to how to use the forms, but the class quests did make advancing as a druid more rewarding.
I think they should revamp Moonglade to return it to its former glory and use the Peak of Serenity as a model for training druids how to use their forms and other key skills.