With that said, I hope they are unafraid to launch a modern day Craglorn (as it existed in 2014) as optional content that might not appeal to everyone.
I think the main problem with the original Craglorn launch was that there was no other veteran zone. You could sort of still romp around in either Bangkorai, Reaper's March or the Rift (depending on which alliance you played) but the rest of Tamriel (plus Coldharbor) was underleveled to the point where you would get no loot or xp. So it was really just either Craglorn or Cyrodiil once you hit max level.
When Crag was introduced, all ESO zones had a veteran version except coldharbour