SHb will end where all three healers ended up the most balanced it has ever been in this game. Let's go back a little bit where White Mage was laughing stock of the community at the end of HW and beginning of Stormblood with the atrocious confession stacks tied to Cure/Cure II. Astro just kept getting its peg lowered since the HW buff, but it was never in a bad position, MP getting tied to cards was something we always wanted from day one and that allowed fixing party memes. Scholar had QoL things, but it was never in a poor state.

With that they upped the ante on end-game savage healing this go around. If you were a healer you had your pick of raid groups to join, raid ads everywhere looking for a healer. E12S party finders always had the healer slots last to fill, some waited hours. People just didn't want to heal or should I say learn to heal that fight. It's a handful, but fulfilling as well.

There will likely be a healer resurgence in 6.0, people always want to try new jobs and sometimes make a drastic main change

Of course be prepared for the usual a lot of subpar healers too since they are changing the meta with pure/barrier healing and how they want healers to do more. When Dark Knight arrived a lot of red DPS that were not good at the game tried to tank, with mixed results.