Some of us may know that it's possible to have advantages that other players don't have (invisible bushes, hays, no fog, bright ammo etc.). I suggest to make built-in anti-cheat which checks these some certain files before running warband without letting player to change them before running client. If file is changed - redownload original files and replace, also inform server about someone trying to use cheats. I've suggested it already a couple of times but I think that it's a right time to implement it now as work on beta client is slowed down drastically.