I am loving the idea about a Naruto journey...sounds fun to watch (as long as it isn't done like filler). Naruto will however continue something with Kyuubi chakra since Jiraiya revealed the key. Jiraiya was actually the best teacher for Naruto b/c the kyuubi has been his biggest weapon up until this point. I think since Jiraiya focused on that it will not be as big an issue when Naruto gets the key or whatever
I like the idea of Naruto going to the Sage Mountain, actually, very nice. Also, I have been thinking that Sasuke and Naruto will take down Madara together myself. It would be the prefect time for a reunion . . .