I know EndWalker is coming out with both Sage and Reaper. I know that the ideas I am about to say might not be super popular in healing community. With the introduction of class archetype quest in Shadowbringers. That will also be in EndWalker. There is a hidden quest line that requires you to finish all 4 story lines. I am sure this style of hidden quest will also be in Endwalker.
I am someone who normally mains tanks/melee dps. I do find casters and casting Healers a bit on the boring side.((that my personal opinion. If you enjoy casters. That is good for you. They are just not my cup of tea.)) As someone who wants to see all the content. I find my self forced to level up Summon as it gives me a free healer.
Now I would like to heal more in the game. If the game had a more action based healer. I figured there a lot of people, who might be willing to switch from DPS to Healer. If the game gave us a healer that felt more like a dps. GunBreaker is a tank that plays like a melee dps. Could we get a healer that was like Gunbreaker. A healer that felt more like a melee leech dps. Maybe a dps heal.
I know Warhammer online is a dead game and was more pvp focus. Though it had some unique healer ideas. Stuff like the shaman/arch mage. Where dealing damage empowered your healing spells. Then healing empowered your DPS.
Same goes for the Warrior Priest/Disciple of Khaine. Where the class was pretty much an AOE healer. It focus off more on melee leech healing and building up a healing resources to release powerful AOE heals.
I know they classes would not act like that. Yet it could be a nice starting point for the idea of some more action base healer.