Let's make a list of all the types of the bullshit we've seen from other players

Let's start with pausing and then resigning, so that someone sits there not knowing the opponent resigned.

Let's continue to blaming your noob team when you lose.

Let's not forget walling your allies' TCs for god knows what reason.

Then there's also the famous attempts to desync the game by jiggling your network cable, loading up a ton of other programs to slow down bandwidth / CPU power, or simply alt+F4ing before they fixed that bug.

Then there's hosting a lobby with subtly different settings from standard and deliberately not warning your opponent.

What else have we got, let's see....oh, of course, HIDING VILS IN CORNERS AND GOING AFK.