The other option may be to sell DKS for D2:ED original owners for lower price (say for the price of FoV).
How would they even go about doing this for gamers who only bought Retail Editions, though? I'd guess through some sort of online manufacturer's coupon would be the way - like Blur did. But, how would just ONLY the ED Original owners get such a coupon? Via e-mail or something? Also - how would they get retailers around the entire globe to even agree to such a thing?
This might be a MUCH easier ordeal for say owners of digital versions of games, from the digital distribution places like say Steam or Impulse - as they've already did such a thing for STALKER: Call of Pripyat - Loyalty Edition, since those games do take note of what you got installed or already bought on record. That STALKER: Call of Pripyat - Loyalty Edition version basically just required you have an installed copy of either STALKER: Clear Sky or STALKER: Shadow of Chernobyl. With that, then you could buy Pripyat - Loyalty Edition, at its set reduced price -- and it basically downloaded installed all the additional new content you needed from your digital distributor.
