STR, VIT, and Parry stats on it would be nice.
If it's harder to obtain than getting your AF armor I'm hoping it'll have a higher base damage than any other axe in the game.
The real question is since it's AF, what ability will it enhance?
If the goal is to give Warrior something that would make it do its job better, one way would be to enhance Bloodbath.
Perhaps a Bloodbath that not only has a reduced recast time, but also does the same damage to the enemy as you are healed for, so it acts like a drain spell. This way the Warrior is able to increase his damage, stay alive longer, and increase his hate. All things that are central to the Warrior job.