You say it like SE can't manage a balanced support system. And as everything goes so far, Healers are heal slash dps, tanks are tank/dps, and dps are dps/dps (some support). Adding support would obviously be support/heal/dps, or support/dps. Where's the unbalancy in that?
You say it like we don't have a choice but to play with these elitest a-holes. What happened to playing with friends? Balance is what SE has been doing forever. dps numbers would be lowered or increased as "balance" commands it.