I think it's hilarious that people think the extra versions of Naruto and Sasuke are somehow preventing CC2 from adding others, like the developers sit there and stare at the roster screen saying "well, we have to fill these spaces".
The size of the roster has more to do with how much of the story the game covers and how much time CC2 has to program new characters. Removing old characters, or combining slots, doesn't magically make more room for characters.
Being a fan of the series (instead of just one or two specific characters like most people) I'm pretty happy with the roster i know of so far. If they are keeping Kid Obito and Kid Kakashi around, it would seem odd unless they plan to work them into story mode. If CC2 took the time to develope a moveset for Kushina, that was a waste of time. Otherwise, I'm sure I'll be happy with it.
*Insert a Naruto/Sasuke variation here* Honestly, one of those are the only characters who don't "deserve" to be on the roster. Naruto that can transform into KCM & different combos? A Sasuke with a different sharingan? Why are these taking up slots when there are other ways to implement them?
*last post for a while because I'm LOLwarnedLOL*
I like what I like, and I don't need a reason. Straw Hat Luffy. You can bring your 100,000. But he's bringing his 10. (Sunny included)