The problem is these difficulties are miles apart, and you allow them to play together... Features that made the game more realistic are being nerfed to give all difficulties an 'arcade' feel to them, so why not make them all seperate modes, with arcade and normal having all features, and advanced- extreme being more & more realistic, less HUD as you go up in difficulty, with tougher survival, tougher movement and more realistic reload and longer effects of injuries, take the intensity from 3 to 11.. Let those who wish to be, be fully emmersed into the game.