What healers need is the stuff I wrote on the main page of this entire thread. Pure healing which BLU falls closer to is unfit for this game. BLU parties as is are terrible and not just because BLU's tanking is laughable

Incoming damage needs to be higher, more frequent or both so the heals/dps cds is not 20/80 but closer to say 50/50.
Our downtime tools and attacks need to be expanded. doubly so if the devs refuse to up the amount of healing needed in content
Our entire kits need to be reverted to a more complex and less homogenised state

The pure healing mentality must be scrapped. It didn't work with WHM in stormblood, and its not working now.
But we can't simply all jump on the green dps train. There must be a balance, and by balance that means dps/downtime and healing must be given equal priority in the role. Fundamentally as a healer gets better at healing, they don't need to heal as much, that's why the dps aspect is so important to veteran healers