Important Quests
From EQ2 Stuff
blah blah blah these are important quests that either give access, or reward something that you likely want/need for progression.
Celestial Doctrine - At least once, so you can get your Level 10 Ascension stance leveled up to to Celestial (adds 10 ability doublecast).
Diaku Corral Quest Timeline - Multiple mount gear rewards. Solo or Heroic versions give updates.