I don’t know about “more than salvaged”.
D4 is a different game altogether that is likely years away, and will have its own set of issues.
My concern is D3 and if they can’t even handle this old game from 2012 and communicating simple stuff clearly, what makes you think they’ll be able to handle D4’s problems?
Diablo 4 will have challenges of its own:
Problems with itemization
Problems with microtransactions
Problems with class balance
Problems with bugs
Problems with PTR’s
Zero communication about any of this?
If they can’t get D3 right now which is 8 years old, and they can’t even make simple statements, what makes you think they learned anything at all?
It’s the end of 2019 and D3 players are still left completely in the dark about this game, patch after patch no one understands why things change or what the vision for the game is.