I seriously don't know why people prefer X-2 Yuna. If she was like that, she'd be a bit like Vaan and Lightning as they can change fighting style. If Yuna had a dresssphere system, she wouldn't be as unique summoner Yuna cos nobody else fights like that. If she is summoner Yuna (which I firmly believe she will be) I think she'd be a specialist character and one of the harder characters to use because all of the new characters sound pretty straightforward to use (except Laguna, he's supposed to be a tactical fighter). Specialist characters are the most fun to fight against and quite fun to use if you know how to use them properly.

And I read somewhere that Kuja is a Cosmos character in duodecim. To me that doesn't make much sense seeing as it's a prequel. If it were a sequel, it would make a bit more sense. But I trust SE will do something with his story. I'm so glad I can play his story now cos he was one of my faves (alongside Bartz, Firionel and Zidane). But apparantely, the game focuses on the new characters more, seeing as the are absent in dissidia and need to explain why.