I'm quickly running out of things to spend my AA's on. I have been purposely neglecting Enhanced Aggression only because the Attack stat does so little for our DPS and adds virtually nothing to agro.
Before I discounted the 50 AA's required for this seemingly useless AA line, I thought I would research it a bit more.
The actual description of the AA is: Each rank of this ability increases the maximum amount of attack you can gain from items.
The only comment I found regarding this AA line was found on the Steel Warrior as follows:
"Enhanced Aggression increases the cap on Attack received from equipment. The default cap is +250, so its not likely that this will be needed until your gear is quite uber. Even then, Attack will result in a small dps increase for us Warriors, but since agro is based on max hit per swing, has no increase to agro."
I think that pretty much sums it up......