I remember reading a similar article to the L.A. Noire one, but it was a dad (or maybe a grandfather) playing through MGS4. I forgot where I read it though. This piece is pretty fantastic though. I love reading the perspectives of an older generation who don't really know anything or dislike games.
I remember reading somewhere that Kojima wanted to have a game with some kind of social experience and to have an open world environment. If it is a Metal Gear game, I'd predict it somewhere to be either during MGS2 timeline where Snake is in Philanthropy and the organization is taking down Metal Gears and shit, or before MGS4. Either way, I'd rather have ZOE3 on Fox Engine.