I'm in general happy with the direction that quests have gone in this game, compared to 1.0, but I do agree with Gramul that they could be a little more. Extra Credits mentions five quest types but I actually just think that most quests can be boiled down into "fetch quests", in essence. I think now that the main scenario has acclimated players to the "quest hub" design, it's good to experiment with the way players interact with newer quests. I really liked the way that 2.1 quests encouraged players to replay some older content (Qarn, guildhests) as lv 50 characters to see how the game has changed since their leveling days. It would be really cool to see more of that kind of stuff in the future, and perhaps expanded to the point where joining a dungeon with the quest active changes the dungeon in some way (e.g. bring a quest item into the dungeon and interact with some element inside to progress the quest).

The quests in this game are extremely well written but I think some of the complexity has been sacrificed in the name of "accessibility". Accessibility is not a bad thing but post-main story, I think even the most casual of players have learned how to interact with the quest log that they can handle more complex quest design. There's tons of cool story bits hidden throughout the environment and I'd love to see more of it get surfaced through quest design.