I dunno, I wouldn't say that I -expected- Metal Gear quality, but as a Metal Gear fan I'm not disappointed one bit by the story. It's over the top and very Platinum, sure, but the actual writing, the themes, the codec conversations, the pre and post boss conversations... it's all very Metal Gear Solid imo. There's a level of depth to what people are saying in the game, even when it is over the top, and there is a coherency which I don't really think is there when Platinum writes their own games. I found the collaboration outcome to be really interesting, in a good way.
My favorite codec was the one where Wolf tells Raiden why he can't hack computers despite being an AI. I mean, it was funny because the main reason was that he doesn't have any goddamn hands. But past the joke it illustrated the difference between computers as we know them and the kind of machine you'd need to build in order to actually mimic the human brain. He can't directly interface with a computer any more than we could even though he's artificial.
In all I was expecting a short game full of good cheesy fun, I got all that and more. The obvious thing here would be to beg for a Rising sequel but I wanted Platinum on ZOE before and holy shit do I ever want that badly now.