Entrail_JI
I feel that the Ren is being forced to solve all the issues himself. While they don't have conclusive evidence to bring in person, can't they anonymously leave a tip to the protectors that something is about to happen and such? Not like they need to do it in person. Even if no one believes the tip, given the circumstances, likely security would increase and the chances of something bad happening will decrease. Don't see why Kevin and Ren have to always be the secret heroes...
So the losers will be sitting ducks for villains. This immobility is a very bad thing. An event of such scale should have some emergency exit system for everyone. If not for villains even the students may try to kill someone even if they get disqualified and in such cases the other guy would not be even able to do anything until an instructor comes.