The short answer is, they already have. There's a video from the ft Lauderdale airport shooting (memory holed quick no?) where a uniformed armed response officer breaks character to a group of victims yelling "we heard shots fired!" and he tells them "no you got it, keep yelling fire" and walks on. There is no reason for him to say that other than him giving directions to a fellow actor.
Also there was that Russian video leaked showing a stage set up with a "isis" soldier in front of a green screen and a other actor kneeling in front of him. Whether they staged the actual beheading or really lopped off the head of some poor fucker (equally likely for satanic Jews) it was not at all a real desert atmosphere, just an indoor studio somewhere and a green screen. Guess how long that was stickied here?
Keep in mind of course these people are going to be pizza fanatics 90% of the time. Better question, why would they come forward? They are afforded cash, drugs, kiddie sex slaves, and the perverse knowledge that they are "smarter than" or more "in the know" than 99% of the country.
I think one of your problems is that you underestimate the scale of the opposition - we are not talking 50 or so guys calling shots to 500 field operatives, then you would want a CIA nigger pulling a trigger (wouldn't want paid actors with no blackmail on them though that's crazy uncontrollable). Instead I am thinking more like the entire Pizza Underground (mcaulay Culkin literally started a band pre-pizzagate called that), high level satanist Jews, familiar masons, cianiggers, assorted pedos, feds, cops, and their families have to number at least half a million in the US. It's so big that they have to constantly signal each other just to be able to keep track or contact people in new areas.
Already said that, you are underestimating the amount of complications that could arise. The hotel guests and staff around the room, the concert goers, the cops and EMS, all will have minds if their own and want to figure it what is going on when a random person starts shooting. It's far easier to just control this ahead of time. Who was on the 32nd floor? Probably nobody, definitely not a shooter, but if there were live bodies at that scene they were all familiars. Same with the first contact cops, same with anyone in the ground doing security.
When you think about it paying actors already in your pedo cult is actually cheaper than paying random people to stay quiet. As it is, with almost everyone involved being a familiar, they still have to kill massive amounts of people because they can never plug all leaks or anticipate all avenues. But to be sure, whenever you see someone with lots of screen time in a sensitive subject area (like the "father of a victim" who harangued over gun laws instead of mourning anyone or the "shooter's" brother who gave a plastic robot performance) they are going to be trained in acting, scripted in their lines, and heavily vetted by the PU (also 95% likely a pure kike).
Tldr; they've been slipping up in front of you for decades, but like normies outside see only tewwowists and not false flags, basic bitch channers see only false flags and never hoaxes, and thus are still blind to just how bad it truly is.