I don't know why people complain so much about AMII. If anything like it's predecessor, it'll do high damage for large amounts of MP which isn't all that great for exp, but for instance battles is very useful when used properly. Considering the "nerf" with NMs gaining increased resistance, you want to do huge amounts of damage in a single strike BEFORE the resistance becomes an issue. What better option than AM? Seriously. AM at level 50 makes any spell prior to that point look like a joke. 300+ (500 -ga) damage spells compared to a spell that does 900+? Who cares about MP consumed or down time when the fight is all about spike damage? Now BLMs will get AMII which if it follows the same trend as AMI, will do close to 2k damage unbursted. I don't know about you, but on end game content, that's nothing to complain about when it's bursted (although I don't have a clue how bad hate will become an issue on this).
Actually, I was thinking, what if SE threw the BLM community a curve ball? What if the spell isn't huge damage, but instead average to high damage for small amounts of MP? Kind of like you've mastered all the prior spells, now you are better at conserving MP and such so you can do the same spells for less MP. Just a random thought.