Definitely a fun little holiday mod. The concept of basically building your own Mario build through choices rather than a level-up was a great twist for a one-off mod and I hope it's not the last time we see a mod explore that. The tone isn't as off the walls as something like Gourmet Guy's 1000IQ Food Quiz, but there's still quirky moments and Easter Eggs sprinkled through the simple, yet charming tone the mod plays.
Only issue lies in a crash you may run into while making choices depending on your playstyle, but the mod is so short and the selections are so quick that even a crash will at worst result in you in redoing a minute or so of choices.
Would recommend to any Paper Mario fan, regardless of your level of previous experience with the series.