Hmmm? Well I can suggest a few RPG's you might like with extensive customization and third-person action combat.
Dragon's Dogma:
Features dragons and the combat is one of the best in an action-RPG IMO. Asides from some really fun class abilities there are many interactions you can perform with enemies (or NPC's) you can pick characters up, hold them while one of your companions strikes them and you climb up big enemies to attack them. The customization of your character is quite deep.
At the beginning you get to customize their face but can go even more advanced with body customization making your character slim, tall, musclely, fat, small or even a child or old person with a bent back if you want. There is a layer system in the armor which means you can wear different clothing or protective padding under armor and there are hundreds of different armor sets and thousands of armor combinations for you to experiment with. Well worth playing.
The game can be party-based (you initially get to design your own companion) but you can play it solo and in fact there are even skills (particularly as the assassin class) which only work when you are fighting solo. You can't turn into a dragon though.
Dark Souls series:
You probably already know about this one. It's challenging, has a brilliantly designed non-linear dark fantasy world, slow combat and tons of customization. One of the covenants in both games allows the player to devote themselves to the way of the dragon and eventually become a dragon disciple that can breath fire. Can't fly though.
Neverwinter Nights series:
I've never played the class myself but there's a Red dragon disciple class in both games that transforms your character into a half dragon with wings and the ability to breath fire. You can't fly though.
Other than these games there is the drakengard series that are somewhat action-RPG's. You don't turn into a dragon in these games but you do get to ride on one. I've never played them myself though. There's also the new Scalebound game coming out on Xbox One which features customization (although of a set character and the dragon) and apparently later allows you to ride the dragon.
At the moment I think Divinity 2 is still one of a kind in allowing you to transform into a dragon but I still recommend the games above especially Dragon's Dogma if you're interested in a good action-RPG to keep you occupied until Divinity Original Sin 2 which features a playable lizard race which are the descendants of dragons (better than nothing right? lol).
Last edited by Demonic; 03/09/15 12:27 AM.