Binding your piston is not cheating. You cant use it on most of them tests anyway cause it doesnt give you the piston as a weapon in most of them. And when you play CTF as a team on the ladders, u gotta have shit like to be competitive. However other binds are fucked up, like the zoom. There is also a bind that changes your netspeed while your playing, with the press of a key. So essentially you could take the enemy flag, in ctf, and hit the bind to make your netspeed 500 (laggy as fuck), 500 will make you lag across the map all the way back to your base, then you could change it back to non laggy (10-20k) and cap the flag. This shit has been done many times in overtime CTF matches and it ruins the game.
By the way, im runnin 800x600, theres no other way to have it
