Concepts:
Who joins? only people who are or were in the military and in whatever branch or field, or anyone who passes their branches boot camp.
a harness strapped on everyone that takes in damage and cool down of damage and impact done to the person wearing the harness/helmet that gets all computed and connected to signal a: 1. electric shock, 2. parachute/airbag, 3. shots down the ability tp fire paintball weapon. Just one more after thought: do clogged harnesses play a factor as well?
drone cameras in the sky, on harness and/or in goggles of participants, so spectators, and all watching can get an Arial, 3rd person, and 1st person view.
everyone’s wearing wheelies shoes, or something like that but with springy pegs in place instead, so that everyone can wall bounce, of cover… maybe cover is bouncy as well.
And maybe when you get too close your shotgun’s only work, as a sensor could be attached to you too. But have Guns resemble the sound, look, and damage points of the current gears game, ready to be updated, with each new release. And one more after thought: who can do this? I think the guy online who made the glitter bomb has the credentials and ability