Lol they should add Ghost Mode X.
Like in ghost mode, you can find these powerups, like "(BL) Invisible for 20 seconds", "(BL)No footsteps/breathing for 20 seconds", "(BL)Faster walk speed 20 seconds", "(GR)Access to the Hero Gun 20 seconds", "(GR)Faster walk speed 20 seconds", and "(GR)No damage 15 seconds".
And if a BL ghost gets the GR powerup it doesn't do anything.
I think it would be pretty epic.