I thought i'd be a good idea to suggest a form of beast transformation/animagus kind of spell. What I had in mind, was that you'd be able to transform into an animal such as a wolf or dog (leave other suggestions, and yes I've been thinking of dragons aswell). I think it would work like an Alteration spell or as one of your "special powers". You'd be able to transform into to the animal and be able to change back whenever you want to (much like the vampire lord).
i think this could fit in the world of Skyrim, since we've already seen a form of transformation spell from Brelyna Maryon, where she asks the dragonsborn if he/she can help her with a quest (Brelyna's Practice).
I think that maybe the Animagus quest could start from Tolfdir, who is a Master Alteration trainer.
It's only a small thought I wanted to share with the Wiki, but please leave any other suggestions to how this could work.