Why do they always give old packs in these bundles? I have pretty much all the Scholomance cards while missing quite a lot Darkmoon Legendaries and Epics.
It's a fair question, I assume it's because this isn't aimed at whales or people who rush to buy the latest expansion. Those people have the pre order bundles which are discounted value. This is likely more at the audience that doesn't pre order and doesn't have the disposable income to collect a new expansion within a day or even weeks of its release.
Not all offers will appeal to all players, this seems specifically designed for the type of player that I'm assuming you are not.