Cleon
Legend
Hmmm, let's just think about damage first. We also have to worry about appropriate damage by size, too. Here's a proposal: dragon form has the same damage by attack as a dragon of the same size. Hybrid bite and claw attacks have damage equal to the claw of a dragon of the same size. And wing/tail slaps have the same damage as those attacks for a dragon of the same size.
The start of that looks fine, but if we give the hybrid form wing & tail attacks I'd treat them as a size smaller than the dragon form.