Yeah, he should have killed Sakura earlier
Yes, he should of gave a feel of war. We really didn't get that much feel for a war.
Tsunade should have died, Iruka should have died, the Kages should of never came back, Sakura should be dead, Neji should be alive, Obito should be dead. It's just blah.
He should have killed off more of the K11
I don't think he should of necessarily kill more but instead should of lost limbs & other war like stuff..