If a continuation of the series is ever made after shipuuden I hope it revolves around a differend main character than naruto. Maybe his son, Maybe Konohamaru or even someone entirely new. The reason for this is that jutsus are atm incredibly strong and opponents are already insanely powerful. If they made another part following naruto he would need to face someone stringer than madara and juubi and he would need to have powerups stronger than what he has now + a possible last powerup in shipuuden. And to be honest the series would just feel silly at that moment.
