1.) Yeah I think it's a collection of jutsu as well as an extension of jutsu. I hope it involves(We've done this list a million times, but it's still fun):
Originally Posted by InfiniteRed
a.) Improving his tai,nin, and possibly genjutsu.
b.) Improve his shadow clones and Rasengan
c.) Summoning control. No more accidental summons of the wrong toad, and I hope that the toad stomach is included because yeah it can protect from Ameratsu to an extent. I know that there are two problems with that. Ameratsu is basically instantaneous and the stomach requires summoning hand signs. Also Ameratsu can burn through the stomach, but not immediately, so it could offer a shield. Sasuke has summoning tattoos, so Naruto could be powerful as hell if he had a tattoo for the stomach. A little blood, tap, and protection/trapping of ninja.
d.) Jiraiya and Minato were great at reading and creating seals, so I wonder if that's involved or just a teacher student relationship.
Jiraiya sealed/unsealed: 5 prongs, Naruto's key toad seal, Ameratsu
Minato sealed: people/animate objects using the Reaper death god jutsu, and his kunai had that seal on them that allowed him to fly all over the place (FTG?).
e.) Performing jutsu that Ma and Pa frog used against Pein himself. For example being able to see life when it's hidden/camoflaged.
f.) While not a jutsu, Naruto seems more mature, and I hope it will continue.
2.) I think Pein wants to bring peace to the world by destroying it, which is kind of ironic. I think the idea is that those that survive will understand pain and grow up to be like him or something. Madara wants to awaken the true power of the Sharingan, whatever that is. However, he must want something more. While I think Pein has a perverted notion of what brings peace. Madara has a sinister notion of what brings control, namely his. He wants to rule the world by war I think.
Of the two, I think Naruto can clarify Pein's mind like he did with Gaara once he defeats him. Pein will change his motivation from pain to love or protection before he dies.