"Were-form shapeshifters must take a high concept aspect indicating that they are a shapeshifter-whether hereditarily or by choice-able to take on a
single animal form"
So, I take it that to be a Pan-Were(A Were-Form with multiple shapes) you have to be a full-Blown Wizard or Sorcerer if you have the refresh cost? Otherwise, it says you have to pick one.
In
Turn Coat,
Injun Joe is the exception, not the rule I guess
.
Also, according to Harry's establishment that magic still has to contend with physics, the were-forms would have another limitation, weight and mass. You can call substance from the Nevernever to add weight and, but the animal in question has to be at least your same mass. So, to play the 200lb. nerd who moonlights as a "Were-Bird" it would have to be atleast 200lbs.
For me, I can't but think that because there's no spirit link or anything, one could make a High Concept
Fullmetal Alchemist inspired Were-Hybrid Animal or a Were-Dinosaur.