Create extra new events in skill.
 

Add spar tournament or other event that required on skill rather then lucks. U could think of new event like feeding the horses. It's requires skills on speed and intelligent to win the game.

I think zone would benefit from a "one-in-the-chamber" game mode :).

If you miss your shot, you are eliminated from the game. If you hit with your shot- you are granted another. Perhaps a visible timer too, like you must shoot every minute or you are kicked. Large group of players.