I think it’d be awesome that we could bring back classic Naxxramas in retail so we can have access to old transmog. We have the data of old eastern plaguelands from classic WoW so we could add an NPC to allow access to the past version like we have in Blasted Lands or Dustwallow Marsh. What do you think?
I agree, we should have old Naxxramas back.
Highly unlikely that this will ever happen. They have the BMAH with a lot of the original Naxx sets that people have spent millions of gold on. Players would start a riot if they spent millions of gold on a transmog that they just brought back casually. The best you could hope for is a re-color but it would likely have to be from a themed expansion or raid tier.