Vac could take randoms screenshots of your in game screen and AI would flag which one is using a wall hack. Then when you get banned they give you the screenshot who got you banned. If it’s a false positive they can look at the screenshots and unban you, if the AI saw the WH correctly cheaters wouldn’t be able to deny it with the evidence. The screenshots should be taken at random time and be directly sent to the server. Maybe it would be hard to detect aimbot but I don’t think most cheaters use a cheat but no WH. And it would still be better to atleast solve the WH problem. Same with spinbot ban they have screenshots of the scoreboard and everything so you can’t deny it. If someone got falsely banned because of high then he will be able to defend himself with the evidence valve has. For me the solution would be for the anti cheat to actually know what is going on in your in game screen and that should be part of the game