Only people who are bad at playing COD would suggest that Quickscoping takes skill and that it's needed. I've seen other players Quickscope. It's ridiculous. It doesn't belong in the game. Why not put Mickey Mouse with an SMG in Battlefield. That's how much sense QS makes.
If players were any good, they wouldn't need to attempt to Quickscope. It's a copout form of playing. It doesn't belong in COD, period.