No disrecpect, but this is just an stupid suggestion. People that camp are free to do that, just like people are free to; team up, run around, stay in the outskirts all game, etc. Remember this; people that camp all game very rarely win the game because they dont kill that many tributes or find chests... And since you only get points for winning they never get alot of points. Therefor they are little to no match on in an DM and they dont get points.
Side question, who should deside what is camping? The spectators? No way, im not gonna get voted no to be in the final deathmatch just because some people in spectators think hiding by middle waiting for the items to respawn is camping.