One thing I think should be considered more often is how the healing actually feels. I'd imagine that, while it might be in an extremely talented healer's capabilities to quickly heal a broken bone, it might not be in the patient's best interest. This could just be my personal experience, or maybe I'm just a wimp, but the night after I had surgery, it hurt like hell. Unless healing magic dulls the pain somehow, I imagine a faster healing session would also induce the pain of bone and flesh repairing at a high rate.
That being said, I'm no doctor, and definitely not an expert on relevant lore. I just figured it was an interesting point to bring up, because I know it's how some healers I've known have approached it: "I can heal this fast, but it's going to hurt. A lot." If the choice was stay bedridden for an extra few weeks or go through unbearable pain, it might make more sense for even the top healers in Eorzia to prefer a slower method.
That being said, I'm no doctor, and definitely not an expert on relevant lore. I just figured it was an interesting point to bring up, because I know it's how some healers I've known have approached it: "I can heal this fast, but it's going to hurt. A lot." If the choice was stay bedridden for an extra few weeks or go through unbearable pain, it might make more sense for even the top healers in Eorzia to prefer a slower method.