Look, an epic "miss" animation is cool and all, but that will become old very quickly. So I don't see the point in that. If I am seeing it 50% of the time (which would happen at AC 15 with lower level chars) I will get bored regardless.
I posted this in another thread already, but I think it's a great solution to the problem:
If you roll under 10 - Complete miss
If you roll over base but under dex - they dodge out of way
If you roll over base/dex but under armour - glancing blow(no damage)
If you roll over base/dex/armour but under shield - they block it away with shield
If you roll over total AC thats a hit(with damage)
Make animations based on this.
It was also pointed out in the other thread that an animation for spell based AC should be added between dodging and armor.
