A small thing, but I think giving Dusktown all the crafting stations, plus an outfit station and bankers would be really nice. It would turn Dusktown into a hub for those dwelling underground, instead of just a place for quests. It would lengthen the time a player can spend in the caverns too. Kind of like the sewers, where there's a central base. You can go to the base, do what you need to do, then head right back in. Instead of having to go above ground then come back down again.