Either way, I'm stoked. This is bringing XI back for me, no doubt at all. Think about it guys. We're finally getting the avatars we wanted for so long. And for me at least, that's the real joy: shiny new toys.
That said, how can anyone really have an opinion on the ability? We really don't know how Odin or Alex will work exactly. If perfect defense is just a 50% damage reduction for a couple minutes, then I'll be underwhelmed. If it can reach 100%, then we're in for a treat.
Odin is going to be really interesting. I don't want them to fudge it up like they did with Diabolos' 2hr (random percentage?) and the initial release of the merit pacts.
Simply put, make it POWERFUL and ACCURATE. It's our 2 hr ability, and there's no reason why it shouldn't be at the top of the spike dmg chain. Summoner has historically been known for the "big shot," make this it! If, against NMs, it's even somewhat comparable to the other avatars AF abilities, then I will be sorely disappointed.