I think those are good ideas and you pitch it well,
@Snarf Zagyg , but at the risk of being a party-pooper, I just don't see why WotC would want to resuscitate Greyhawk - except for, perhaps, a one-off anniversary box set. I don't think it has contemporary appeal, and if they want to explore some of the themes you mention--namely, a low-fantasy setting more akin to Howard than Tolkien--I think there are better ways to do that, or at least with potentially wider appeal. I think a commemorative love letter to classic Greyhawk in a one-off deluxe product is a better bet than a re-envisioning of a very 1970s world in 2020s trappings.
So, as I mentioned in another thread, there were two ways to handle Greyhawk (IMO):
Two solutions-
1. Re-issue the old stuff. Just some sort of fancy "collector set" with reprinted big ol' Darlene Maps and charge a ton of money. It won't attract the new gamers, but will keep the olds happy, and would "celebrate" the setting. Of course, it will also result in the death of it ... given the lack of new gamers playing it, but still!
2. Make something good.
To expand on that-
Sure, Hasbro can always make a super-deluxe edition for the 50th anniversary and sell it for lots of money. Just include a fancy big ol' version of the Darlene map and the original, pre-85 info, and that will make the majority of the grognards super happy. If you include some sort of supplement that includes and expands on the 3e timeline and lore in a well-done manner (without trampling on the Gygax "core") then you've got, what, 95% of old-school Greyhawk fans on board?
But then it's done. And, tbh, that does a disservice both to young D&D fans, and to Hasbro. Let me explain.
Imagine if, in the late 80s, Paramount had said, "Sure, people liked the old Star Trek. But who really cares any more? Let's just keep milking the olds with Spock ears. Don't bother rebooting it. Who would care about a New Generation?" Well, they would have lost some valuable IP and history. Not to mention an entire streaming service (seriously, CBS All Access and Paramount+ are basically carried by Star Trek and 90s nostalgia.... SHUT UP BEAVIS!).
Greyhawk is the ur-setting for D&D (yeah, yeah, Blackmoor, City State). To lose Greyhawk is to lose an invaluable piece of D&D history. From the names of so many spells (however stupid, MELF) to items and artifacts, to famous historical people- it's all there. I think it's great that we have young fans coming in and putting their own stamp on the game; but many of them also love re-discovering the roots, and understanding where it all came from.
As such, a rebooted Greyhawk, one that carried bits of the past forward while being attractive (in whatever way) to a newer generation, would be beneficial to the game. To the IP owners and the fans. A way to reconnect the past and the present.