Current kits are tuned for this next savage tier and ultimate I believe. They are giving more healing tools to dps and tanks because it's likely there will be more outgoing damage in harder content. heck, I dare you to try running P2 normal right now with 0 healers and tell me how it goes.
Just waiting for square enix to nerf every single bit of healing and support other classes offer in 6.05 because of general populace, followed by inevitable healer mains complaining about P2S being "overtuned"