I think if they can’t adjust the content then they should differentiate the healers more, like Astro for example has the cards and then maybe tone down their shield strength.
With scholar (i don’t know much about scholar) but maybe keep their strong shields and strong dps ability because that differentiates them from Astro, and they become the go-to shield healer.
Then with White Mage keep the big heals but give them some utility that makes the choice between Astro and White Mage a harder choice to make.
I personally prefer Astro of the three because I feel I do actually contribute more to a group (because of the cards).![]()