This is a creative idea for an interactive story. There is a wide range of possibilities presented. If I was a shape shifter my first thought was that probably the most fun thing to transform into was a bird because of the ability to fly but then the choices presented even better options such as mythical creatures such as dragon... it definite offer some great opportunities. This interactive is still developing and growing so the storylines haven't gotten far enough along yet to see how they play out. I recommend getting at least one good story arc developed with 4 - 5 none setup chapters to allow authors to get a feel of what you type of stories can be developed in this. Good Luck with your story.