That's the one issue I have with it too. Like I mentioned, they could have reprint-esque side sets for them. It could also let them experiment with new foil versions of older cards. Imagine how a level X card would look like if it had GX-style foiling for the card art. I'd buy those Luxrays if...
I always wished that there was official support for older formats or eras. Even a while ago, PTCGO supported Legacy with tournament support and the whole nine yards. I would love to be able to walk into a venue and bust out my old DialgaChomp or Reshiphlosion decks in an actual event. Maybe they...