Thats because it was unlocked at the last level before prestiging so most people didnt have a chance to use it unless they unlocked it permanently.
Ill be one of those who will use it on Ghosts for sure, not because i wanna camp but rather because SATComs seem so easy to get and are very powerful chained together that im afraid enemies will prefire me everytime. I usually try to sneak behind enemy lines so its a must for me
So what if it did everything I think it should be same as MW3's Assassin because anyone could use the perk instead of just one specific play style. I would laugh if they made it counter Amplify imagine how many campers would come on here and become crying lying babies just because they can't get more then 10 kills in a game. Also you are going to be disappointed Ghost or whatever they called it will counter anything that has to do with the map meaning it counters Recon completely instead of lessening the time of Recon it makes it not work I think but I do know for a fact it counters Sit Coms and Motion Sensors but it is separated from Cold Blooded basically it's like the Black Ops 2 one only it has more and you don't have to move for it to work. If you can't handle it play hardcore cause it will force you to stop looking at the map. I mean seriously if it's to much for you that Ghost counters the map then don't play core.