At least Celestial Basin has Treasure Pouches that can be earned at a decent pace, even by relatively new characters. The rewards that you can buy with Moonlight Buds are utterly useless to any character with even a modicum of progression.
You just stay in the same area and repeatedly grind the same mobs until you get your 30 banestones and 4 boxes. Unlike Celestial Basin, which is 'quest driven', Moon Refuge is just about grinding. Now that Moon Refuge is in the daily rotation, the absolute terrible design has come into clear focus.
