The problem is the community hype certain ninjas like roshi, and now Han, Han is a good ninja for casual players.
And this is my view of the overall ninja roster on naruto...
Every ninja is useful and good in the right team, there's no such thing as op ninja, or sasuke being stronger than his susanoo version, for me that smack talk, that's people riding the sheep train.
The only thing that changes is the ninja you have in a fight, and there will be always a counter for your team, but after it, you got the variables which are refines, magatamas, charms, etc. But even then, you can still be beaten, if you get careless, and this game will reach a point where you can beat * players without worrying about variables.
So in a nutshell, yes, 3.0 will bring new stuff, but in the end, this game will bring you more power and more stuff to do ingame, which aint bad, since there's only 2 ways you can go...either power or ninja(if you're casual). If you got money to spend you can have them both if you're smart.