Yesterday I tried my fresh Russian character (medic-demolitionist ) in multiplayer for the first time, and immediately I noticed a huge flaw of the HEALER skill.
I have no idea how much HP does a nearby player has and does he/she require healing.
A health-bar above player head , % number or a list of players with their health would be very helpful.
Even color change of the player tag would suffice - white for 100%, and gradually through yellow to red.
For example here is a screenshot from Dying Light: