I'd be okay with that. Because then Naruto has to deal with the grief of annihilating most, if not all, of his friends and completely undermining his efforts to bring war and tragedy and some other bullshit to an end.
There was something out of place, but nice, about Kakashi talking to the Kyuubi like that. Like, "Oh hey, I know you've slaughtered thousands of people in the not-too-distant past, but I'm over it." Kakashi confirmed for most character development, fuck what everyone else says.