I personally love the Drebin shop because it adds a lot of customization. You could play the game as a straight up shooter, maybe play it like a sniper based game, or play it as classic Metal Gear Solid. I love the depth and sheer customization. I'm sure some people disagree and think that it takes away from the stealth experience, but I think that it is the perfect addition to the series.
So whats your view on the shop? Whats your favorite play style?