Well, I got the special edition and checked out one of the vids. They were talking about it the whole weapon system. The basic premise is choice. In that you can choose to play the game however you want, and they figured Metal Gear purists wouldn't use the weapon shop because they'd prefer the challenge. It's sort of a strange thing to debate internally. More choice means thigns are easier... if you choose the easier path. You can say if the choice is available, if the player can use it to legally win, the game is easier as a result. I'm undecided. I mostly care about funness factor.
Try a playthrough on big boss extreme. You WILL NOT be able to push yourself past sneaking force no matter what guns you've bought. And the sneaking... is not half as easy. The enemy AI scales a lot, and they weren't terribly dumb to start off. To top it off, I find the legal guns in a pinch are more sensible. Defending yourself when you're trying to sneak and gun caught offhard isn't super easy with a railgun. You might find CQC and a handy M4 is more sensible.
Try a playthrough on big boss extreme. You WILL NOT be able to push yourself past sneaking force no matter what guns you've bought. And the sneaking... is not half as easy. The enemy AI scales a lot, and they weren't terribly dumb to start off. To top it off, I find the legal guns in a pinch are more sensible. Defending yourself when you're trying to sneak and gun caught offhard isn't super easy with a railgun. You might find CQC and a handy M4 is more sensible.