I'd say prolly only limit the number of players to 10 MAX, and the rest be npc's who die on the first day of slaughter. As for Super Powers, let's not be all like Magneto or Deadpool level, and have at least some form of the laws of physics governing the powers we have. After all, if we were suddenly shooting lightning from our fingertips and throwing people around using telekinesis, why would people still participate in the Hunger Games and not just rebel against the Capital?