Just starting to wonder whether or not we will get to actually fight both Deathwing AND Azshara in Cataclysm. I still think there is simply too much content to develop for one expansion, so I'm thinking that perhaps Cataclysm truly is JUST Azeroth.
Think about it, Deathwing and Azshara are both "introduced" this expansion. Both of course being the cause of the Cataclysm. Nazjatar and it's surrounding isles and sea floor are raised as a brand new continent. However, we dont have access to this new continent yet. We do however get to explore everything on mainland Kalimdor and Eastern Kingdoms.
Deathwing plays a more prominent role in Cataclysm, with a climatic final showdown within Grim Batol as the final Arthas/Icecrown Citadel encounter in this expansion. Azshara is introduced and setup for Xpack IV with us finally getting access to the risen Nazjatar Continent with a proper Maelstrom Expansion. There we also get to finally also see the Broken Isles, Kezan and Zandalar. The areas of Kul Tiras, Crestfall, Zuldare, and Tol Barad are implemented in Cataclysm as new zones.
How's this for a raid tier structure sound?
Cataclysm - Expansion III
Tier 11
Blackrock Mountain - Ragnaros 2.0
or perhaps Uldum instead.
Tier 12
Ahn Qiraj - C'thun 2.0 or Cho'Gall
Tier 13
Grim Batol - Deathwing
Maelstrom - Expansion IV
Tier 14
Neputalon - Perhaps within the Tomb of Sargeras
Tier 15
The Third Old God - The one behind the corruption of the Naga.
Tier 16
Nazjatar - Azshara