I think a better response would've been to purchase Nostalrius (the organization), and offer it as a value-add for their players. But it seems clear Blizzard is extracting whatever value it can from WoW before it dies, rather than truly serving their customers.
Also, the "trademark means you must sue" myth has been debunked by the EFF: https://www.eff.org/deeplinks/2013/11/trademark-law-does-not...
Even if Blizzard hired Howard Roark himself as their architect, seems to me I should be able to make alterations to the design of my own building in which I wish to park a Howard Roark designed car, no matter how angry it makes Howard, Eugene, and Blizzard.
And a court may rule in my favor even if you seem to think I should take your word on it, from your perspective of the zany libertariangasm you guys get from thinking about the ownership of ideas and not having anybody tell you what you can't do so long as you get to tell other people what they can't do.
I also sense that you are not a native speaker of English: so, just mentioning, what you wrote comes across in English as very "there is only one way, the way I am saying". It sounds like you didn't mean it that way, so sorry it triggered, when I saw that debate blip on my radar screen, I decided to shoot it down :)
That is not true, unfortunately.
Do they? They have the right to profit off of it and are allowed to set the only profit, but others are allowed to create evolutions of the universe in other directions as long as they don't profit. And if any of those are more popular, Blizzard has no recourse.
No, I disagree. It's Blizzard's right to decide, who is allowed to do it. Only Peter Jackson was allowed to create movie about Tolkien's universe - and it was right of the author, without any doubts. It's the same case.