The problem with Support jobs is, if they realy want to make a Support role, then groups will be forced to take 1 Support class with them. Another issue is the Support class must not excel at the other roles, otherwise what is the point in taking a DPS, if a Support class can not only provide the same amount of DPS, but also add Support abiltiies.

When I think of Support role, I think more then few crowd controls spells, I think of buffs, debuffs, ability to off-tank or off-heal. Having 1 or 2 crowd control abilities does not make the class a support class. If you want to see real Support roles, look at some of the classes in RIFT or the Chanter from Aion.