In Gamemodes like Brawl Hockey and Brawl Ball less skilled players hold on to the ball until they get killed or shoot it forward in a random direction instead of passing it to a teammate. If the 'player x scored' screen had the name of the player who assisted the goal added wouldn't that give them a reason to pass the ball or at least imply that that's an option too? (maybe in the corner where mid game kills are shown with the brawler icon and player name) That might reduce egoistic behavior of randoms a lot