[J_McQuade]

I think this is the most reasonable take I've seen here. As my sibling comment mentions, people are already doing this. I think that - if anything - my point is that this is being done, but separately to the social element. You could get a hundred PhDs to look at the data and identify a cheater, but what you really want to avoid is someone that 9/10 people don't want to play with... and only the players can really tell you who that is. Data from the PhDs would help, though!

I've not really thought about it so deeply until right exactly now (thanks, all!), but I think doing so might have led me to a very unpopular opinion - I might be prepared to say that this problem can't be solved in an anonymous environment. Unless you have a reputation to ruin (or, say, an xbox account to lose), then being outed as a cheater costs you nothing. Again, this is incompatible with a lot of current multiplayer modes - and most of what I love about PC gaming - but, ultimately, I'd rather be judged by my peers than a rootkit.