That five tails was a little too "pokemon" to my tastes... but at least the ep was entertaining.
Naruto's greatest force seems to be in his capacity to make friends with anyone and against all odds.
I wonder if he can do that with Kurama.

Regarding what we know of the tail beasts, well Kraco you're right, Propaganda.
I guess the writers were careful to show us things from angles that could be discarded thanks to the war(s), legends and lies.
That way they can rewrite some parts without contradicting anything.
The angle they introduced is that tail beasts are dangerous when you try to catch them and use their powers against their will... like placing them into jinchuriki.
The same might be true for 10 tails, it's possible we've been told it was a very dangerous and destructive force, because the ones that passed the legend had to fight against it as enemies.
Now, it seems Naruto really is on the path to become a new sage of the six paths (that's the name I think)