I think we need to implement class swapping ability at the guild castle, there's really no reason not to. Either you use a homesweet home or a guild castle transport stone, either way you're using up a consumable and thus the spending from the item shop still takes place, or you are using the npc to enter the guild castle (who is usually right next to the housemaid). Both ways really won't change anything other than making it less frustrating when swapping class and using the guild castle functions at the same time. Would really like to see more people get behind this idea and forward it up.