You know, Eric, I helped write the darn thing and I feel the same way. It would be cool to see how the GM changed things around, or how they present the NPCs (of which there are a ton), that sort of thing. I really get a charge of seeing how people put their own twist on my material...like having someone guest-GM your homebrew campaign setting.
That's what cool about our game. Video games have set scripts - some far more flexible (Deus Ex) than others (pick a Final Fantasy) - but pen-and-paper games allow a guy to say:
"Hobgoblins...sure, lawful evil makes you think of Roman as a default model, but what if they were samurai instead?"
or
"I think the Impresario of the Bleak Theater needs to speak with a lisp. Sure, he's a duergar, but no one will expect that."
or
"I don't like the way this dimension door trap to Peduncle's grotto works...I'll change it to flame strike trap instead."
Honestly...does ANYONE run a game "as-is" out of the box?
I don't think so. I've never spoken to anyone who didn't make some changes to tailor it to their game or preferences. Guess I'm rambling, but that's what I love about pen-and-paper games...the freedom to make stuff my own.