So, you know how after you finish Azteca all these comets start raining down and Pacal says their time si up and all that? Well, the coemts is the only thing that happens, I mean Azteca isn't really "destroyed", and you can go there and do all the sidequests and things (not complaining about this though). What I mean is to darken the feeling a bit more, there should be enviromental damage (that doesn't affect sidequests or getting to areas) and most of the NPCs should be ghosts to add to the post-apocalyptic atmosphere.
I loved Azteca and Dragonspyre, so I am hoping part of the final story arc will be us using magic or time travel in some form to go back and save those places from the disasters brought on by Malistaire and Morganthe. I would be nice to see them not in ruins, and from a practical point, I'd much rather finish my AZ side quests without things falling on me (and lagging the game).