Midnight dragon actually got buffed up some.

It's hard to remember when changes came in. Some random things off the top of my head:

* New areas, some replacing existing areas. Arial City, Emerald Forest and Arboria were all rewritten.
* Shaman specializations; you can either focus on heavy armor or light armor, with other effects from each.
* Shaman paths, with each path giving you new communes.
* Changes to how edge points are earned. If edges didn't exist 7 years ago, then "edges".
* Goblins, centaurs and "azure-touched" races.
* Some seasonal races, e.g. frost giants, that can only be rolled during certain parts of the year.
* Change to how the sleek wand system works.
* Scion and Nexus cabals are gone; Entropy cabal is back.
* Empowerment is now "optional", but unempowered priests commune their supplications at a lightly lower level and healing isn't as effective.
* Lots of new imms; lots of imms no longer around.
* Using a merc while solo ranking now gives you a xp boost.