Not knocking the cut scenes because once again all non game play elements can be easily skipped. Although if the ridiculously verbose scripts or overwrought plotlines of MGS games are a game breaker to the player, why would they bother to play another MGS game, much less buy it unless you're beefheaded enough to buy a game simply because it's the hottest current title.
I can think of plenty of games that do much worse in the story telling department, not to mention the overall presentation and voice talent performances. My biggest gripe these days is the perfunctory storylines and characters created for most big production games to the point where it feels like they're not even trying.
Like it or not, the most dedicated effort was made to at least try to add substance to a storyline and game.
It was the same thing with GTA. Some of the flaws from previous games were improved, but a lot of the fundamental ones weren't. But in many cases, the chief complaints were in regards to the fundamental structure of the game itself (mission based, with a fair amount of similarity between missions of the same type). Did anyone REALLY think the basic GTA formula was going to be drastically altered?
Did anyone REALLY think that the fundamentals of the MGS series were going to be changed when they are the main reason for all the repeat customers (fans of the series)?
No gripes with the level of difficulty either. First time through most story centric games should be played at a level that is not frustrating to progress through at a decent pace. Unfortunately the easier levels of difficulty were essentially set by dialing down the combat rating and intelligence of enemies.
But if anyone prefers the challenge, they should be playing Big Boss Hard. I wouldn't be surprised if there was an additional level of difficulty upon completing the game the first time.