Leaf vs Sound/Sand
This is how Orochimaru should have taken over the leaf. Instead of killing the 3rd, he would just wait till Sasuke came to him, the Chunnin Exam arc and the Save Sasuke arc never having occured. So..Sasuke leaves......The Third goes into retirement and they get Tsunade as new hokage.....Naruto gets trained by Jiraiya and Sasuke would have his Uchiha fight feats.
Alll characters would have their beginning Shippuden feats, up until the Itachi vs Sasuke fight. The only exception is Naruto would learn Sage mode earlier.
On a suprise attack, Orochimaru springs his trap.....
No edo Tensai
Limit to one summon per fighter