Next April Fool's Game Mode Idea

I was talking with some friends the other day and we thought that a cool game mode idea would be something like "Friendly Fire". This mode you would be able to damage to team mates and be able to kill them. Forcing you to plan out team fights and be more calculated. If you were to kill a team mate you would lose one of your kills if you have any and it would be given to the enemy team. What are your opinions on this? I know there would be a good amount of trolls if this got released but I still think it would be pretty fun.