At some point in one of his letters (way too lazy to find which one), Yoshi P mentioned that he was happy that the characters from the original inn quests (which unlocked the inns in the first place) were so well received. I'm not sure whether he implied more quests would be added or not, but I feel these new quests were a nod to those that applauded the original ones. I'm sure there will be more in the future, especially if the quests seem 'unfinished'. (I have yet to do the new ones.)

I'm not sure if there will be a 'point' to them in the end, though. Maybe we'll get some novelty item. Maybe it will unlock another questline. Either way, it's still a fun little side quest that gives the game a bit more character... just like the 'dreams' you can have.