There is literally nothing else the healers need in terms of healing. What else can they add to healers in terms of healing for their new spells and abilities for Endwalker? Another AoE oGCD? Another 2minute CD buff to healing for 10 seconds? Give AST and SCH their versions of Benediction? Give Excog to AST and WHM?

There is only an avenue for creativity and novelty in healers and that's either Utility or Damage.