The only game I've seen spawn conspiracy theories saying that it was intentionally unfinished and that the director was fired as a 4D chess publicity stunt. Whether that says good things or bad things about the MGS community is up to you. Game is still a banger though.
Beautiful graphics and sound, incredibly cool and entertaining story mode, a perfect roster and tons of unlockables and secrets. Just wish that it didn't take a handful of dedicated fans to crack the game open and rebuild it from the ground up in order to make it not a nightmare to actually play.