i was doing some reading... and i remembered that the frog couple couldn't merge with naruto because the fox wouldn't allow it right?... and then i was thinking of when the 8 tails told naruto that he couldn't turn into the 9 tails fully because there was still alot of tension between them and that the 8 tails and killer bee didn't have problems doing things cuz they became close and the 8 tails was tame... i believe that naruto and the fox are getting close to becoming friends and the 9 tails being tamed.. when that happens the frog couple would be able to merge with naruto and naruto would have unlimited sage mode... wouldn't most of you agree???..