by TefJ » Fri Jan 09, 2009 8:25 pm
My guess would be that each of the original 20XX seasons ran on their own individual platforms, which is why they still don't have the features of the newer ones.
At some point, they realized that it made much more sense to have an engine running the game, and the cards as a module which can be swapped out. From a programming standpoint, it makes much more sense and will make future games easier to update, and they can add any set of cards easily.
Unfortunately, it would give them no real reason to discount any more games as the 2007 set would be able to incorporate any updates they come up with in the future.
I'm not certain that this is the case, but it seems a likely scenario.