Exploitation of AOE limitations (defense) and AOE multiplier at Wintergrasp star

As there are limits to how much damage AOE can do overall, multiboxers in Wintergrasp are exploting these limits to reduce overall damage to the group. At the same time, at least one on icecrown (Tea, Greentea, Basiltea, Pinktea, et al) is also exploting AOE/Totem damage by surrounding the landing point at the start of Wintergrasp, thus instakilling pretty much the entire opposing team at start.

Something needs to be done to address this. It is detrimental to BOTH sides in Wintergrasp to have these multiboxers doing these things. I don't want them on my side doing it either. At some point this needs to be recognized as the exploit it is.

Are you saying that there should be limits of AOE damage that are not implemented in Warmane, or that those limits are currently being bypassed by multiboxers by using some kind of exploit?