Were mw3 went wrong

IN MY OPINION MW3 MULTIPLAYER IS A STEP BACKWARDS FOR MULTIPLAYER THEY HAVE NO COD POINTS THIS MEANS THAT YOU NEED TO UNLOCK EVERYTHING THAT YOU WANT ON YOUR GUN AFTER THE SYSTEM IN BLACK OPS THIS COULD BE ANNOYING-THEN THERE IS THAT YOU CANT HAVE GRENADES AND CLAYMORES I THINK THIS REALLY BAD SYSTEM-THESE THINGS MIGHT BE FRUSTRATING FOR PEOPLE WHO WANTED IT TO BE MORE LIKE BLACK OPS AND LESS LIKE MW2