Ok, the underlying questions to this support class nonsense. What can a support class provide that you can't just put on another role and be done with it?

Also, if their support is all they have, there's a balancing issue, if the support is less than 1 dps class then it will be a leper. If it does more, it's a requirement and needs to be entirely balanced around. If it's the same or equivalent, then it is pointless.