I for one had no issue with various fetch quests or aether flight unlocks

[Ransu]

You were playing the wrong way. You are supposed to do only those quests that give you aether current and then do the rest when you can fly. You save HOURS in each zone that way and it is much less frustrating because you can just fly over every obstacle.

Some of them are level locked and others are locked behind several side quests and the last one i unlocked in dravania was locked behind the main story quest that leads out of the zone.