. IMO Greyhawk fans will feel the same only moreso because the nostalgia pull of Greyhawk is so strong for the true fans of the setting.
Yes, but this 576 CY Greyhawk pushes my nostalgia buttons and feels far closer to 'canon' (ie 1e Gygax!) Greyhawk for me, than did 2e or 3e Greyhawk.
I think this approach is good for:
1. Fans of 1e Gygaxian Greyhawk.
2. Newbies new to D&D.
It's bad for fans of metaplot 2e Greyhawk and 3e Greyhawk.