Awesome idea for a "NEW" method of game play which could certainly be implemented in addition to or instead of the Death Match format. It, however, would no longer be a Death Match. The definition of a Death Match is as follows and the current version in DTM follows said format:
Deathmatch - Wikipedia, the free encyclopedia
Deathmatch or Free-For-All (FFA, also called DM or Player vs All) is a widely used gameplay mode integrated into many shooter and real-time strategy (RTS) video games. Normally the goal of a deathmatch game is to kill (or "frag", from the military term) as many other players as possible until a certain condition or limit is reached, commonly being a frag limit or time limit. Once one of these conditions is met, the match is over and the winner is the player that accumulated the greatest number of frags. It is an evolution of the competitive multiplayer modes found in genres such as fighting games and racing video games.