IMHO, WG7 Castle Greyhawk isn't nearly as bad as its reputation suggests. Sure, it's a terrible Greyhawk module, but taken as its own thing, it's actually pretty good. Well, parts of it are. The three biggest criticisms I'd level at it are:
-Some groaningly bad attempts at humor (there are actual funny jokes as well, to be fair).
-Lack of overall cohesion. Feels like 12 separate one-level dungeons instead of 1 13-level dungeon. And it is. A few of the levels don't even seem to have any way to go up or down to other levels. Which is easily fixed, but really dumb. Levels get tougher as you go deeper, as seen in the recommended character Levels for each adventure... until they don't. Like, they just kinda gave up on the idea of recommended character Levels 3/4 of the way in. I'd love to hear about the production of this one, my guess is everyone was working separately, with little or no input or even contact from the other contributors. Some of these may have been intended as/for other projects.
-Some rather nasty (even if they're rooted in truth) digs at Gygax.
I'll also point out that some of the humor hasn't aged well, being based on pop culture references that are now outdated (and some of which were none too fresh at the time).
But for all of that, WG7 was written by a veritable who's who of RPG talent. Rick Swan, Guy McLimore, Jennell Jaquays, Greg Gorden, John Nephew, Scott Bennie, Ray Winninger, and Steve Perrin, among others. And the interior art is by Jim Holloway and Jeff Easley. An impressive roster, to say the least. Many of the levels are clever and look like they'd be fun to run or play. There is quite a wide variety of challenges, themes, monsters, and treasure.
Don't get me wrong, I understand why many people were disappointed by the bait and switch. But that seems to be what most people hate WG7 for, rather than its content.
