You really made a great game. Sure it's missing things I would have liked, a larger world to explore as a dragon, customizing your dragon armor, more in depth character creation. Story had a pretty good feel to it, all in all, you made a great game though, and your soundtrack... outstanding, give your composer a raise.
I really enjoyed more than anything, the Aerial Fortresses. The intense aerial battles, having to plan your attacks, hit and runs, and the fortress general quarters music, all great. Just thanks for making a good game, worth my 60 bucks.
Maybe do some DLC that expands the story and game world? Also release a soundtrack. This game kept me enthralled for a week.