Soraka doesn't get punished in mana right now for spamming Q
I've had it done to me and played with it and Soraka really just doesn't take enough mana hits for constantly spamming Q. It makes laning against her really hard, especially paired with people like Jinx and Jhin who can throw a ton of shit on the ground already and with her kit that makes it pretty hard for her to die early already, it really just helps turn her into a bigger laning bully. I can't think of any other support who can spam an ability like her and not get punished in mana.
Would like to see it require more mana or at least extend the cooldown.