I started playing in stormblood and was healing all the time. Now I tried leveling all the healers and these are my considerations.
White mage is still the same.. you just heal and press your dps button, which is fine, but not my taste.
Astrologian is a little less engaging than it was in stormblood because the cards feel... soulless, but it's still fine. The buff giving you both sects is a fitting addition for astrologian tho.
Scholar used to be my main in stormblood and it was a really cool class because you knew you were a dps with a green icon and had lots of tools for every occasion. Now you still have the healing tools, but with the loss of the dps ones... I feel like being a white mage with less healing and some more shield and ogcds. I loved to switch fairies once in a while depending on the party I had; it wasn't really that useful since Selene was weak anyway, but it was nice. Every time I see more than 2 mobs, spamming art of war gives me crippling depression.

Now I heal only to shorten the queue time if I don't have much time, but I play black mage otherwhise.