The game was short, but I don't mind this because it's clear Nintendo was testing the design space for an open-world Mario game. I believe the experiment paid off, but I do have some concerns.

Like Mario Odyssey, the objectives for Cat Shines (the equivalent to Odyssey's moons) were repeated too often. It's a bigger problem here since Bowser's Fury is a lot shorter than Odyssey. In addition, the Fury Bowser gimmick wasn't fully fleshed out. It was an interesting idea, but he wasn't as threatening as I imagine Nintendo thought he would be. This is because his attacks are very easy to avoid, the penalty for dying is only 50 coins, and Bowser goes back to sleep after only a couple minutes. Also, screw those Cat Shines behind Bowser blocks! There are nearly a dozen of these (out of 100 total Cat Shines) and they force you to stop doing what you're doing unless you want to wait for Bowser to destroy them. These issues turn Fury Bowser into an annoyance rather than adding suspense to otherwise familiar Mario proceedings.

There is huge potential in this open-world setup, but Nintendo needs to ensure that the novelties don't wear off after a few hours.