I don't think we should be mad at IW, they made the game, and were told to just make some new maps, and probably when said "we don't know what else to do" Activision said with it's evil grin "let's do what Nintendo does, repackage and re-sell old maps", and then wiped the baby's blood from around it's evil, smiling lips.
Activision has become a true demon recently, after axing the 2 guys who had a big part in making MW2 a strong game, they pull this shit.
I'm just going to wait for them to finally lower the price when they realize that at $15 for 3 new maps and 2 remade old ones is NOT worth it. They need to lower that price by 66% before anyone will consider buying them, but with the evil that Activision has been doing, I say they add another 10 new maps to the 5 they have now and charge little to nothing, they've made enough selling the game, they should suck up the loss and get their fans back before we head to the Medal of Honor series (who if you haven't heard, have been working on their own game set in modern warfare) for our games and leave Activision rubbing their tummies hoping for more newborn infants to feed upon