The function of having a task to fetch an item is obviously less effort than the story and items. It's the story, character development, cutscenes and item development that take a lot of the work and then have to be translated across several languages.

But it's not like they don't keep producing other types of quests which are gated by weeks, such as beast tribes, custom deliveries and other little side quests we've had recently to add lore to the MSQ.