So, this is how the Support class is right now.
Ana: does everything except tank with great DPS, good single-target sustained healing and great AoE healing with healing boost to boot, the strongest CC ability in the game, can shut down all enemy healing, and has potentially the strongest ultimate in the game.
Lucio: has incredible personal mobility and an excellent way to get his team into the fight faster and dodge more easily, mediocre sustained AoE healing with good burst AoE healing, an excellent disruptive ability, and a mediocre Ultimate.
Mercy: the best single-target healer, has a good damage booster, excellent mobility, self-healing, the most powerful ability in the game with Resurrection, and the most powerful Ultimate in the game.
Moira: decent single-target healing, amazing group and burst healing, pathetic single-target DPS, average AoE DPS, great mobility, and a good Ultimate
Symmetra: no healing at all, strongest and easiest DPS in the game, Turrets are good for warning and disorienting enemies, mediocre flying barrier, one Ultimate is excellent for getting the team back to the action and the other is an average health booster.
Zenyatta: mediocre single-target healing, great DPS, excellent +30% damage boost abilitiy, and an amazing AoE healing Ultimate.
If we get any more Supports, how could they heal/support in ways that differentiate them from what we have now?