i use paladin(tank), shaman, druid, mage, priest(heals)
i like the benefit from all classes.

Love the mage food/ports and high dps. Used often, very handy.
Love the shaman burst and buff, elementals and Bloodlust
The druid i could replace, but he brings good buffs, battle rez and good aoe dps.

if anything, i would change the druid with a lock or another mage maybe, but very happy as is.