Anyway, this isn’t the Olympics, a professional sport, or Chess. It’s more like pickup league. Preserving competitive purity should be a non-goal. Rather, aim for fun matches. Matchmaking usually tries to find similar skill level opponents anyway, so let cheaters cheat their way out of the wider population and they’ll stop being a problem.
Or, let players watch their killcams and tag their deaths. Camper, aimbot, etc etc. Then (for players that have a good sample size of matches) cluster players to use the same tactics together.
Treating games like serious business has sucked all the fun out of it.