I rest my case, you admit you will camp as a result of this.  And so will the majority of the other players.  Right back to black ops we go.  Bunch of bad kids sitting in corners, what fun.  And you can't spam their headsets that much that they wont be able to tell which direction you're coming from when your footsteps are magnified 400%

Now imagine a game where everyone is doing what you suggested.  You think that would be a fun game.  Half the people camping corners, the other half crouch walking around with heartbeat sensors?  Sounds like a pretty bad game to me, good luck on objective games.  And don't rage quit when your team doesn't plant the bomb in search because they couldn't plant in time because they were "crouch walking". 

Neither will I, and I'll still buy the game.  It will just make the game a lot less fun for non-campers