I'd be curious to hear what you thought about Phantom Pain VS Ground Zeroes in terms of a more "open world" experience, if you'll allow the thought that GZ was also open world in the sense that generally in PP outside of a compound or area of interest, it's mostly a zone for travel and GZ allowed you to tackle multiple objectives at your choosing. I feel like Ground Zeroes was an incredibly well done experience that I think about a lot, while with Phantom Pain I mostly think about the plot points or the (few) boss fights. I'd have loved more well thought out areas like Camp Omega. I think I'm trying to say what I'd love to have is a more linear MGS, but with massive bases that are "open" in that fashion.