Didn't they say they were going to update Eureka on every odd-numbered patch? The patch that will just have one dungeon? I think I recall that but it's been so long. I think that would be a good pace to keep the place active if the rewards are spaced out enough. Most people I know haven't really bothered with it much yet, but that's largely because they're waiting for the lockboxes to not projectile confetti all over their inventories.