Talk of 'legacy servers' is nothing new to the World of Warcraft community, but it has all come to a head recently. The conversation came to the limelight when Blizzard shut down an unofficial fan run sever called Nostalrius, that was running vanilla WoW.
The community has been pretty upset about it since it happened, but it would seem that there is light at the end of the tunnel. The admin of server are set to meet with Blizzard at their campus on the very topic of bringing in 'legal' servers that allows players to go back to their favorite versions of the game. In a post on the server's forums, the team said:
The last few weeks have been full of exciting events that we did not anticipate. We saw the first official answer from J. Allen Brack on the topic of legacy servers, the petition reached 250.000 signatures, and we are currently scheduling a meeting at Blizzard campus!
We are very excited to be able to help Blizzard understand the part of their community asking for legacy servers and many other related topics, in the hope that they will eventually make it possible to legally play previous game expansions.
Hopefully something does come together here. It's clear there is a massive demand for this, and it seems to be a big enough problem that the developer can't just ignore it and plow on. We will have to see how this one evolves.