Quote Originally Posted by Archangel
Pain isn't the final boss, Madara is or possibly the nine tailed fox
If Pain and Naruto are the ninjas in the prophecy who will bring change to the ninja world, Pain should be one of the last enemies at least. Madara should be Sasuke's prey.

Regarding Kabutoro there's something that's been bugging me, but I guess it's considered spoiler. (From the opening).