So while the layout of set piece locations and core game systems are extremely satisfying, and there's a lot of really cool shit in this game as a whole, it's a significant improvement over Peace Walker and seems to meet Kojima's vision of open stealth, and though I'm early I'm still loving the hell out of it...
...this could be the worst open world I've played in a quite some time. Afghanistan is basically of a series of dull military checkpoints repeated over stretches of drab, empty terrain, on a map built around weird geographical chokepoints and bottlenecks, with no reliable, snappy method of fast transportation and little if any reason to explore.
The game basically hasn't justified giving you an open world to explore, nor made exploration and traversal of that world enjoyable or rewarding. It almost seems like they started with the vision of a bunch of Ground Zeroes-like areas, in that they're sizable mission focused zones to explore and construct objectives around, and the sensible reuse of assets and overall "emergent" game design lead them to stitch them all together into one seemingly coherent open world without actually designing a game around said open world.
Maybe it gets better. Specifically the open world. But as it stands Afghanistan blows.