Having now completed all boards and having seen the staff credits, this is probably about as close to completion as it gets short of buying everything from the shop and playing every minigame.

Amazing game, and I'm so glad to have experienced a great Mario Party game finally after having been turned off to the series by being introduced to it through so many awful entries/copycats. Only complaint is that this game is begging for more content. If we get DLC (and the good stuff at that) I'll bump this up to 5 stars. It's that good.