If you're a smart cheater, you have also bought some legit crowns at some point and have receipts to prove it. Then your account becomes more or less immune from ever getting banned. Just throw in few arguments about visual bug etc... and you'll get away with it. Maybe Nexon will also apologize to you.
On a side note, if Nexon can arbitrarily take 500 medals off a player's account, why do they keep saying they can't give you back your lost medals when a peace treaty breaks?? Clearly, they can manipulate one's medal account without impacting the rest of the players. Unless broken peace treaties are done on purpose so no one can ever leave dynasty league...