I realize that as a SK, I have a bit more freedom with my AA's, since I have no need to go down to the crit heals...but I can say this, I wouldnt give up Battle Leadership AA's for anything.
I am 448 int, wis, sta, at the moment personally, and being able to buff the groups skills by that much is invaluble, on raids, solo, or in groups. Its nice to know that I can hit defensive mode in a pinch on a raid and still be able to hit the mobs, not to mention the help it lends to any other fighters in group, or those poor suicidal pullers who need to stay defensive more often then not, but can still hit the mobs.
Usually on a raid I go offensive unless off tanking, and go 2 hander, don't underestimate int...was pulling around 650-700 dps the other night on single target mobs with 0 dps/haste mods, but 760 or so int or so. Also not sure if anyone else has seen this, but there is a limit on mob debuffs which accounts for the largest dps gains on a raid. Was critting my coil for 396 a tick last night, using master2 group taunt to debuff disease and it still hit for 396, so apparently there is some cap.
Bottom line, Battle leadership rocks, it gives you, your groups, and your raids more options in levels, group makeups, and more dps.