Yoshi-P says WHM is getting a buff
From the live reading of the patch notes that just ended on Youtube. Apparently Yoshi considers that the changes to WHM are a buff.
He said Cure III now has enough utility to be your go-to solution for party healing after big, expected damage, while the changes to Medica II are meant to make it more useful for prevention. Basically when big damage is incoming everyone would pack up, you'd put up Medica II in advance and them top them back up with Cure IIIs.
He also says that the new content has a lot of mechanics (he mentions damage sharing) where you want to be able to heal the tank and close-range DPS at the same time, and Cure III is obviously ideal for this.