You say Activision can get away with it like they're doing anything illegal. Only thing they should apologize for is stealing my party chat
Personally, I would've liked to see this split into 2 packs and given the option to buy only one, but I still would've bought both. It would just help get more gamers who are short on cash playing the new maps.
As for the COD4 maps, depending on what changes they made to their engine, it would be really easy, or really annoying to port over. I would like to see it get a slight graphical upgrade, but it will be interesting playing these maps with the new perks. The way I see it, fans were asking for them, and they got them. No reason to complain.