So with Classic servers coming online sometime "soon(tm)" it's got me thinking about how there's a large void in Timewalking with the lack of Classic content.
I know a lot of it was retooled for various expansions but given that they'll be having classic servers it seems like they can bring some of it back, also it might be interesting to see if they do things like 10-man timewalking for Stratholme or Dire Maul.
More than that though I'm thinking about timewalking raiding of Naxxramas.
Sure we have the LK version but the LK version is missing several models of gear and weapons found only in the original and I think if they made it into a timewalking dungeon they could bring those models back (corrupted Ashbringer, Might of Menethil, etc) while avoiding the possible drama of characters only leveling up on a classic server to get those weapon models and then bail.