Your desire to play an older version of a game, or see a previous version of a movie, has no legal standing. It's a fairly easy concept to understand.
There's no legal defense that will magically remove Blizzard's copyright from ALL iterations of their property. It's simply not going to happen. No amount of money will change that, or prove otherwise. To think so shows a complete naivety on your part to common sense and basic law principles. It's amusing, but to go before a judge and claim "I can use this older version of a game any way I want, because the current game is different, that magically removes any copyright."
Do you know how fast a judge would throw you out of their courtroom? No, really. A claim like that would last as much time as it would take for the judge to dismiss teh case, and then sanction any lawyer dumb enough to waste the court's time with it.
And, if there was a chance at winning, don't you think the hosts of the servers that are threatened, like Nost, or lost, like Scapegaming, would have had lawyers come up with this magical defense, and try it in court? Nost didn't back down because they couldn't afford to pay lawyers, they admitted themselves, they wouldn't win, they knew they were infringing.
That's one of the more hilarious aspects to this whole thing - Nost said "Yeah, we knew this might happen, it's not legal", and here you guys are, running around, claiming "nuh uh!"
Hell, advising the Nost team to use the Chewbacca Defense is more sound legal advice than what you guys make up.