Maybe Kojima should have not released it...
Some features like the camera view mode in the cut scenes are really nice, but it could have been released in the original game.
I really was pissed off when I saw that Snake wasn't the main character in the original game. I was double-pissed of when I again saw the same thing.
Hey pal! This is not a game, it is a Bonus Disc!
I think that Konami ran out of money, and they had to make a quick move too gain extra funds (after Apocalyptica, even the biggest game corp. would bankrupt).
Anyway, buy it if you are a BIG FAN of the franchise, Rent it, if you don't have nothing to do on Sunday evening, or make it like me: Convince a friend to buy it, play it some time, and then, let your friend be disgusted with you for some weeks.
theCAT