From what i have read from the German version is that Roshi along with the other rare's in that treasure won't change that much until the game is updated to 3.0 what changes the damage calculation's. Through that you will see lighting blitz die in PVP system while it's still viable in PVE. Along with that update it seems the current wind team meta will still become even better.

Wind main, Sage Naruto, Kazekage Gaara, Gakido