The thing with basing an event on something other than facing other event players, is that it is hard to prove and hard to know if the proofs are real.
I mean, I could send you a bunch of screenshots ive taken from winning games 2 weeks ago. You have no way to see that, you have no control whatsoever on the game.
Unless, that is, if you removed the NPC part, but thats something else and its ccompletely removing a part of the event.