As you know this occurred recently but as you asked heres my penny's worth
I personally come to enjoy myself, and that means exactly that, running around with your friends, laughing and chatting, teasing each other and that is why you join a clan, otherwise no point. There is no fun at all in lasting a nanosecond after you spawn, being tubed to death etc etc, so no point in playing, no fun, why be in a clan??
There unfortunately is no other way to tell if people are cheating other than a lot of time and effort by the admins, but there is also little doubt that some people do, however they do it.
Every normal player has good and bad days, but players that are highly 'skilled' to the point they are untouchable ruin the game for the ordinary players, and they leave, that is proved beyond doubt. You get in this clan because you fit in, we have some astounding players who I have never considered cheaters, far better than me, but I can still kill them and occasionally get near their score. BUT I don't care what you say the 'highly skilled' players are impossible to play with, so I personally leave, if I left often enough so that it isn't worth playing then what is the point of being in XI ??
It is a very difficult thing, but in it's simplest term if the ordinary 'Joe' cannot play without enjoyment, then he won't play, yes I am sorry for them but they have no place in a clan like this - full stop.
And stop before you start Angelz lol.