Unless the entire team knows exactly how their tank and/or healer will perform in a duty, there is really no reason at all for the healer or dps to pull more then the tank has chosen as their mob load. Sometimes I'm all for big pulls, other times I prefer smaller ones but it's really the tank that should make the decision. Ain't dealing with attitude from some players I've meet when I've called them out on their extra unwanted pulls only to get responded with I don't pay their sub. Seriously respect the rest of the party members, after all DPS are easily replaced