Hell, even FFXI did this. You learn to kite Kirin, pull the adds, wait for the next, etc. I guess it was just easier...
Sometimes you had Suzaku and Seiryu spawn really close together and had to deal with those 2 hours. Or someone grabbing Byakko and he triple attacks the puller to his death.

And well, seems like you talking about 2-3+ years after it was added and people where geared above it.