Naruto-Minato-Sasuke-Kakashi AND maybe Guy/Lee should be the main stars right now.
And also, like it said in the latest chapter, Kurama's chakara wasn't gone, it was just depleted. So I'm guessing even though Kakashi is in the other dimension, he could still receive Kurama's chakara through a chakara connection. Physical and telepathy probably don't work because its another dimension, but a chakara connection should still be reached. It's only a matter of time till we see if its really true.
Again as of now, screw the kages. And leave it to the underdogs . (Naruto-Sasuke-Minato-Tobirama-Kakashi-GUY/LEE!)