It's not plain at all! tar Fox Adventures has one of the best graphics engines I've ever seen. It has huge environments, great level design, awesome puzzles, a cool combat system and a ton of different abilities and items. It plays very similarly to Ocarina of Time, it has a cool story (although the voice acting could have been a ton better) and some really cool flight missions. It was a great game, just not really much of a "Star Fox" game.
But, I do have to agree, Star Fox 2 looks badass. I can't wait to see more of what this game has to offer.