a: Crytek doesnt ban cheaters with videos (Cephoverlord is still out there).
Getting trusted people is easy. Believe me
))
They have indeed banned a lot of cheaters, only when they get a stack of complaints about a player. Usually they will just issue a warning or reset their level. If their account is de-activated, they can just create a new one though.
Server side bans are fairly easy for admins, I've baned a couple of cheaters for 68 years (higher causes a reset for some reason).
How is getting trusted people easy? They have to be:
1.) active
2.) Not over zealous
3.) Understand the game mechanics (eg Kill cam + fov changes, makes people look like they are moving slightly faster in kill cam even though they are not)
4.) Try to avoid false positive kicks/bans
5.) Work with the currently limited set of admin tools for detecting cheating (spectate mode is missing).
EDIT: 6.) Accepted by the community <-- can be a big issue on some public servers, that i've seen in the past.