We were robbed of a potential masterpiece of horror media.
I eat horror for breakfast, it's one of my favourite genres. Games, movies, novels, comics, you name it. Playing P.T. for the first time was the most unsettling, paranoid, anxiety inducing experience I have ever had in the genre. And the almost hysterical community at the time trying to piece together this demented puzzle was an extra layer of mystery and madness.
Ultimately we don't know what the finished product would have been like, but I have a hard time imagining anything else but a master class in horror.
Kojimas new horror game OD will likely be good, I'm sure. But you can only do a game like P.T. once, and that boat has sailed.