Imagine the following scenario:
Patch 7.3 brings us to Argus. We win the fight against the Burning Legion but get stranded there. Velen promises to get us with the Exodar and bring us back to Azeroth. Let's say, a trip from Azeroth to Argus and back with the Exodar takes 2 years, 1 year per flight. Not that much time, but enough time to have shit hit the fan back on Azeroth. Therefore, a second revamp of the old world (and maybe more?) is going to happen. How would you handle it as a designer?
Would you make the current Cataclysm world available via Caverns of Time or some other way? Or would you do the same as with Cataclysm, do a revamp and remove the old version completely?
Would you only revamp Eastern Kingdoms and Kalimdor, or maybe also (parts of) Northrend, Pandaria and even the Broken Isle?
Would you add level scaling to all or only a few zones or would you not scale anything? The same applies for dungeons, would you level scale them?
Would you add world quests or would you go back to a daily quest system?
Would you add large scale events like the demon invasions or would you not do that, because it takes too much time?
Would you maybe go so far and remove flying and do a Path Finder Achievement? Or remove it completely? Or just make it available at a certain level?
Would you do anything else differently from the first world revamp? Any lessons learned?