Its simple really he said it himself his an avenger so i is planning to kill everyone that was involved in the uchiha massacre. As it looks now he is after Danzo
(he is not after killing the kages just the hokage it was a mistranslation by sleepyfans check out the bikitopia translation). But a he will definitely clash with the cloud nins either samui's team or the raikage himself if he recognize him. But madara is sure to back him up one way or the other so this is really going to be intense
He might start listening to madara after this becuase i think madra is doing all of this right now to get sasuke under his control, at some point when sasuke learns the truth im sure he will turn on madara as he really was the mastermind behind the uchiha massacre.
About his thoughts on naruto after we saw his flashbacks during the killerbee fight he sure still have feelings for his former team that he is trying to repress that will eventually result in his becoming friends with naruto