If Mario Odyssey were to get dlc, what kind of dlc would you want?

Please no spoilers (I am planning to play through this game at some point). New kingdoms would be nice, but I'd also love to see them add new missions to the existing kingdoms. Also new costumes would be great. Last but not least some holiday in game events would be awesome. For instance, they could put some holiday themed food in Luncheon kingdom (egg nog, gingerbread, fruit cake, etc).