Players who dominate

Every single game I play there is someone who knows how to kill the ai because they are "predictable" Once these players kill 5 ai bots it causes other players to not be competitive and have fun playing. Causes others players to keep losing, there is no team work encouraged to help other team mates to get kills as well so we can all have fun. I suggest making a change like this, any player that has more ai enemy kills than others by a certain amount, next heros such player kills will not reward gold and exp or should be reduced after each kill, eventually to nothing. Any player who thinks its ok to continue killing heros any way, would eventually cause the lose of the game, because more players would be required to kill ai heros so the team can be powerful enough to win together and not by a single player. I rather lose the game than win a game with a player having 40+kills and i only have 1-2 as well as the rest of the team.