For Naruto to sway Kyuubi's attitude he'd need to be able to reason with him first.

As far as we know the only thing Kyuubi wants would be complete freedom, it's true eight-tails found a common language with Bee, but I get the impression that if it was possible between Naruto and Kyuubi it would have happened by now.

Not to mention the series would be ruined, for years Kyuubi is uber evil villain and suddenly he gets friends with Naruto? I mean, for real?

Dunno what kind of partial freedom Bee offers to Eight-tails, but I see no way for Naruto to let Kyuubi do ANYTHING but his bidding unless when he loses control over himself and when that happened, he'd hurt friends around him.

Still, Bee might have some useful tips, not everything Jinchuuriki related would have to require friendship with their own beast I guess?