Hopefully without spoiling anything, I'd like to point out that The Echo is one of your character's most interesting abilities. Currently you can have flashbacks in story quest cutscenes and that is all. But I think it should play a more significant part in questing than it already does.

It would be interesting to be able to use the Echo to tell if NPCs were lying to you, or to uncover secrets hidden in Eorzea when you travel through the world.

If in travelling to a certain area, the Echo could activate and render a cutscene, which in turn activates a quest.

Such events could add an extra dimension to exploration and also add some variety to the implementation of quests.

edit: Omg, i swear i was in the quest forum...