Pros: No Caves! While the caves are a unique dive into early procedural generation both in layout and music they're an absolute slog. If you've played Pikmin 2 too much and want a unique twist Caveless is perfect for that. It remixes, adds new puzzles, and gives you Purple/White Pikmin Onions. All treasures are surface level and in different spots. It's fantastic and easily my favorite way to play Pikmin 2. EVEN TRIPPING IS FIXED.
Cons: No Cave Music. Missing Bosses. Unfortunately all of the most iconic Pikmin 2 bosses are missing from this (other then Raging Longlegs) There's no Titan Dweevil, Water Wraith, or Man-At-Legs. I would assume due to the way they interact with the overworld but nonetheless they're not in the game.
Pros: Inventive gameplay and a unique take on the RTS genre. I've always loved Pikmin ever since seeing it at a Blockbuster as a kid and renting it for 3-days. There's something mysterious and charming about the world and the game. It balances the line of being creepy and cute all at the same time. Future entries definitely polish the game though as Pikmin 1 has some issues that keep it from being 5 stars.
Cons: Pikmin suffer many issues that are later cleaned up with Pikmin 2, 3, and 4. Tripping, Poor Pathfinding, and Sluggish Animations are a major pitfall for Pikmin 1. With later entries the Yellow Pikmin Bomb carrying is tweaked and fixed slightly but if you're going original GCN port pikmin w/ bombs will be an absolute burden.