New Game Mode: PVP

So, we all know that minecraft has 4 existing game modes: creative, survival, and spectator. But I want another one, one that will encourage PvP and cause epic battles for survival among "teams". The game mode I am speaking of is something called PvP, where you can select it BEFORE you create a world. when you select this game mode, new settings will appear called "Number of Teams" where you can state how many teams you want there to be in this world from 2 to 4. and  "Customize Teams", where you can edit the name of the teams and select the color1 and (maybe?) banner they have to represent themselves. When you create the world, it will look like a normal survival world, except two things are different, you have this weird colored square in the corner of the screen, the square and your username that appears over your head will have the color that your team has been selected for1. you will also be prohibited to enable cheats.

Before a player joins the game, they will have to choose which team they want to enter. if all the team has been maxed out, s/he will be unable to enter it, if all the teams have been filled and the max number of players in the world has not been reached, they will enter a team called "neutral" where they are on no team except their own. 

once you have entered a team, you will be incapable of damaging team members, which is really handy during battles because you're basically spam clicking the hit button and you don't know who is who.

pls vote :3