HERE'S A HUGE SUGGESTION:
I keep thinking "so what happens after a dragon is fully grown...does it just continue to hover above the habitat? "
What if when it's full grown, we release it...it flys away...every once in a while we spot it zooming across our game? Or maybe theres a landing pad that periodically it comes back to to get fed? It certainly would make more room for us to raise more dragons, add some interest and depth to the game...an ultimate goal for each dragon? Otherwise, I'm afraid that though this is addicting and fun initially, it's going to get a big "so what now" real soon...
What do you all think?