Re: buff stacking, I think it depends on how close to 1.0 they get. Originally, I think you could stack anything that wasn't the same spell, and then some time later they made it so you couldn't stack the same type[/class/school?] of buffs, which is why some of us messed with some mixed group comps that could cover all of the types of buffs. I may be misremembering that, too, as I think there was a hunter pet buff situation that was very similar but came later when they "uniquified" pets.