Agree to disagree guys and girls. We have all said our piece about camping. It's not like the money hungry f@cks at treyarch are going to do anything about it. So, sadly were all just whining about stuff that will never be fixed.
Nothing needs to be fixed. You show up on the radar if you stop - how is this not a fix for camping? What Treyarch should do is rename this game to "Cry of Duty".
I use both tactics. I can run and gun and camp. If your only way to know where campers is to die to them then you need to develop your map knowledge further. The more you gain experience on this game, the more things will become second nature to you and you won't have a hard time dealing with them.
I play nothing but Core TDM. I don't know how bad the spawns are on other game modes but in my experience, I don't find the TDM spawn system bad at all.