I have been thinking on this and I have mechanics in my head and everything
Like the same way mages can change from water, to fire etc (F1,F2...) I would love to see that but for a shapeshifter...
So you press F1 and get the wolf transformation, your weapon bar changes from whatever weapon you had, and it becomes the beast weapons. The same if you turn to other animal, now the utility skills could be working in the same way as the glyphs for the druid, in a way that if you have the animal glyphs when u are in your human form, the skills will do something different as if you were in one of the beast forms and if you are as a wolf, for example, the glyphs would be different from the bear form as well. So you could have 10 different skills for each form!
And if you had other skill but the glyphs for the shapeshifter (ex: Healing Spring) it would bring you back to your human form and cast it there. Now some ranger skills could maybe used in some forms, like "Strength of the Pack".
I don't know how hard it would be to do a class like this, I imagine it would be impressively hard, but in my opinion so it would to play with it!!
What you guys think?