I like the idea of trying to check if a player is an a flow and them getting rewarded for it. If i expended on this idea i would probably make it so that you have a bar that files up when you kill something but which slowly depletes so you need to keep getting kill/hits to replenish it, and than you get buffs the higher the bar goes. To balance it, the higher the bar goes the faster it depletes but and maybe more things to hit spawn.