Everyone who wants the complete experience owes it to themselves to get the special editions for the extra maps raising it to 12 maps.
unlike games like Uncharted 2, THE OPTION TO HAVE MORE MAPS IS THERE. You just have to do your part and not be cheap with your money. Everyone has all this time to save money, so they have no excuse.
With the 8 maps on the disk, I think Rebellion may have put extra effort to have all of them support every single mode in the multiplayer. I would be surprised if co-op isn't supported in all of them.