They can't even remaster Diablo 2 without fucking it up. You can't even play single player offline without signing into a "Blizzard account" that fucks up and won't update and has to be reinstalled and then maybe, if you're lucky, they might let you play the game you paid for.
I bought that for my wife after quite some discussion of what a pile of shit Blizzard is.
After that experience, I can't imagine giving them any money for "Diablo" 4, especially considering how much I failed to enjoy "Diablo" 3 (which I bought on Playstation since once again, the computer version doesn't work offline).
I prefer to spend money on Dark Souls now, it has that melancholy feeling that Diablo 1 had, and that sense of danger, that dark atmosphere.