I don't think so but what do you suggest anyway? Some Naruto character with a traditional european costume like Hinata [Oktoberfest] idk. Also having exclusive content would mean other versions get exclusive content too that we'll never get to have I wouldn't like that.
Well, if they release any ninja made by their own. It will start costing you ingots instead of coupons. Cause Oasis would not want their MAJESTIC artwork to be bought with mere coupons. Ingots is the way to go for them to do business