Its not so much nerf ast its just stop overbuffing it, leave it where it is now which many will say is still the most powerful of the three healers and bring the other two up to its level. At the rate they're going with every patch raining buffs from the heavens on ast we will be in a duo ast meta sooner rather than later. If the media tour values and jp tooltips are to be implemented as is then that may already be the case honestly.