I know for a fact that what I wish WoTC would do is self serving, subjective and just my opinion, not to mention a nonviable business idea but I think that it would be awesome if WoTC would decided to support all editions of D&D. Basically they release, for example, the campaign setting book for Forgotten Realms which is divided into sections for all of the editions including OD&D and BECMI. I realize it would be a big book but it would be a hit. Of course then one would be stuck with a book that is only partially useful to them and not wholly. It's too bad that WoTC couldn't strike a balance that would support all of the editions...