Actually smarter than you think, especially if they are going to tie vanilla wow to their subscription main game. Vanilla wow attracts a very different crowd than retail, it would be perfect for them to announce: We sold X (people who play retail) + Y millions (people interested in vanilla) copies of the latest expansion! With how unpopular a cash shop will be, I think they will opt for the subscription model, then it will make more sense to just make a retail + classic bundle.