That's what happened with this guy (the guy in red). He was pre-screened, he wasn't selected at random. He was well known in the community as well, Blizzard alr

That's what happened with this guy (the guy in red). He was pre-screened, he wasn't selected at random. He was well known in the community as well, Blizzard already went with a safe crowd member. Short of embedding their own "paid-crowd" in the audience.. they couldn't have done much more.