the problem with summoners is the players using them not the job. many and i mean many simply don't care that they are pulling mobs off the tanks which makes the entire dungeon a pain to run with loose mobs trying to kill the healer when the mob switches from the summon to the summoner and the healer keeps them alive.

for every one summoner who takes the time to synch themselves with the party there are ten who simply do whatever they feel like the entire time. the same is true of archers there are ten archers who think "wow I can pull any mob from a tank LOOK AT ME I"M GREAT!!!!" while forgetting that a party is supposed to work together to get the job done efficiently and quickly. its not pull all the junk mobs all over the place making the healer waste mana keeping the damage dealer from dieing to those same junk mobs they keep breaking free from the tanks.