I agree, thinking back how many of the earlier dungeons work before 50. I can think of some that might work (like Stone Vigil perhaps, decently difficult mob packs and boss mechanics), but even if it were 50+ dungeons that's still a very high variety of dungeons to do, especially if the 3 available change on a weekly basis. Would certainly keep things from getting old too quickly, and also less need for developers to be so quick to push new dungeons out per patch which frees them up for coming out with other varieties of content for us to do.

That's what we need - variety of things to do with our time so one type of current content doesn't get beaten down from grinding so often that people start to loathe the content altogether (again, Neverreap).