I am very skeptical of Blizzard having seen my hard work get invalidated by them killing classic era servers completely, and removing TBC from existence and now wanting to do the same thing to WotLK which is the best version of WoW by asking everyone's opinion of what they should change in Cata so that people would like it....
I have made a proposal/suggestion many years ago on these forums for Blizzard to centralize its playerbase on the retail version and create achievements with rewards asking the players to defeat classic content in its original form by clearing that content on the different versions of the classic game but earn unique rewards for doing so on the retail side.
Doing so would keep all the players on the retail version while still keeping all classic versions relevant and alive.