Not nearly as bad as people say
The Arwing missions are clearly the best part of the game. Its basically the same gameplay from starfox 64, just looking better, with more enemies, and just as much if not more fun. Slogging through the stupid landmaster parts are worth it just to come to these parts.
The story of star fox was never pulitizer prize winning, and that hasn't changed here. The lovable but cheesy and stupid pilot chatter is back, complete with slippy being a loser, falco a jerk, and crystal from starfox adventures being somehow a annoying tomboy and nerve grating damsel in distress at the same time.
Overall, if your looking for solid gamecube titles, this one is definitley worth a look, provided you know what you are getting into.