I posted this in another thread here, but I'll just post it here again.
Don't expect animation like in the opening, that's wishful thinking.
And you have to realize that from now on it's going to intense and alot of fighting (until the Kabuto flashback) so it's harder and costlier to animate all of them well.
I think the animation will be good, a bit better than the last few episodes which weren't that badly animated. Just don't have too high expectations, that can only dissapoint you while if you have low expectations you'll be very happy when it's great and less disappointed when it's normal.