Camping will be prevalent in this game until people:
A) unlock whatever guns/perks they feel comfortable using on the move B) pad their KD at a decent number
I'm going to go with B. Simply because everyone is starting out with 0 kills 0 deaths. So they are gonna camp and get a 2-5KDR before they feel a little more adventurous and end up going down to 0.42kdr
"Map knowledge" is actually part of the key to CoD's success.
You not only "level up," but as your understanding of the maps increase, you get better and better. Note it's not just knowing the maps, but the enemy's spawn points--and not just by red dots on the screen, but totally intuitively.
It's not about camping, it's about flanking and knowing where trouble is coming from.
Walked into my first match thinking I'd be good, went 3-20. As soon as I said **** it, I'm going to play for fun I went 32-6. Learned that people still play KC like b****** but actually play Domination the way it's supposed to be played. People getting mad at the campers forgot that the game just came out, when more people learn the maps the campers will lessen.