As of right now, the best way to win fights and the game overall is to just wait until two other teams or people fight, and then finish them off while they have (most likely) little no to no health and are probably on low ground. This gets incredibly frustrating as once you kill someone or finish off a team, there is a very high chance another team was just watching or waiting and came to finish you off. This tactic being so efficient is bad for the game as it incentivises it and is not fun for many teams.

My idea is a buff called: Adrenaline Rush.

You get the buff by killing a person or wiping a team (in which case all of your teammates gets the buff).

The effect of Adrenaline Rush would only be that you can use health and shield items faster; somewhere between 1-2x faster. This would help recovery and not be an overpowered buff meant to kill.

The buff would help not in deterring the tactic of running in after a battle, but to help the team that has just won the battle reset and get ready for another fight.

Buff visuals could include: Energy flowing around the health bars, or your body pulses and acts like an x-ray image on your body (only you can see it).

TL;DR : You gain a buff to med faster after you kill so pesky people can't kill you while you are weak from fighting.