Of course, but on the other hand, how many people would buy the DLC and not but the expansion pack? I think that's a very small amount if any at all.
I can see it now all the players that do not like the changes for G&K will certainly buy it instead of sticking with the love of their life, an unfinished CiV vanilla. One with supposedly the best diplo system ever, with that nincompoop AI, they say is simply trying to win. Ha they'll buy the new game and be complaining about it til XMAS! Hopefully in a seperate rants thread.