I stumbled across one, and I like how they aren't as "kiddy" looking (blocky) as most other things, so you can actually display them next to other figures and they don't look out of place.
Yea I noticed that as well, it also seems the legs and the way the head and jaws move are based on Breakout Beast's. Although my slight nitpick is that the tail should be slightly longer, the back of the body a bit slimmer. Also in season 2 (wich is what they seem to be based on) Drogon had straight horn's, Rhaegal upward pointing horns and Viserion downward pointing horn's.