about Campers-
Well, I'm not too sure why you would camp with the thunderball, considering it wouldn't serve you well unless there were a lot of players in the map, then you could find prey easily for kills and pass of the thunderball before it goes off. But this doesn't work with lesser amounts of players because you risk holding the thunderball when it goes off/not being able to find someone to pass it to.
Remember the rules I mentioned for the strength game I make the students in my Parkour Class play? If they end up with hot potato, then only that student has to do pushups, while if any student misses/drops the ball or falls off the balance beam, then all the students have to do pushups? That rule is set in place so that they don't purposely "miss" a catch when time's up. I in fact had to add another rule a few weeks ago:
If you hold the ball for more than 4 seconds, you (single student) have to do half the amount of normal pushups.
That was to prevent them from holding the ball and then hot potatowning select students. (This was just to avoid conflict between students and keep fairness in the classroom environment. However, it's different for a video game so this rule wouldn't apply.)
So what if, to prevent camping, the clock counts down twice as fast if you start camping?