well , i mean CMD is a cool mechanic but here is my objection, suppose i have an illusion spell like mirror image. In 3,5 edition grapple required a touch attack so the attacker could miss it. In 3.75 he just does grapples you even if you have 6 images dancing around you. I just dont get it , am i right ?
All combat maneuver checks are attack rolls, so mirror image works fine against them. If the CMB hits an image, the image is destroyed.
Combat maneuvers are attack rolls, so you must roll for concealment and take any other penalties that would normally apply to an attack roll.