Spotter and firework are two things that ruin competitive game experience. On Innova server we used to play clanwars and championship with certain rules that made game more "fair" for pvp.
Now game has so many ridiculous weapons and modes that make game no fun to play. As exp. Ursus, or SHOTGUN that kills you in a long distance. absurd
In my opinion, legal wallhacks, as it was said before, have no place in pvp games.