I wouldn’t mind any iteration of it that existed between WotLK and WoD. But Cata/MoP would do it.
Why?
I played it continuously from WotLK - WoD, it was the spec I had the most fun with in all types of content that I focused on.
Having said that, a past iteration of that spec wouldn’t do well in the modern game, but would need to have things added to it to better suit modern philosophies.
This is what I imagine it to be like if brought back for the modern game: