Custom games idea.

so im not very good at custom game options and i dont want to spend hours trying to find a way to make it work, but i was thinking is it possible to use regicide and make it team based in the sense that whoever is the king is on their own team and then everybody else has to kill him/her? i think it would be an interesting custom game.
so it would be like this.
those who are hunting the king cannot kill each-other only the king and the king has a speed boost and 2x overshield. then who ever has the highest score after the kings death becomes the king again.
if this is possible anyone mind making it and putting it in their file share for download? or is this not possible as of yet?