Since the feedback section still has no permissions: Would be nice to have a thicker healthbar, when playing as support and healing, to see better the overheal and health itself of what you are healing, turrets or not. Having this health bar on the HUD instead of hovering above the head might improve readability. Feel free to move this to feedback when appropriate.
If this change were made, then I would like to have it as an option rather than built in. I'm not sure how accustomed i could get to it, I still have to pull my training wheels off first ^_^