Yep, gotta agree.  I'm on my 3rd reading of the thousand page (give or take) pdf of this story hour, and it's totally great!  
However...
I realize it was like nine years ago, but I just finished re-reading the session in which the second Parthol Runecarver simulacrum was fought by the PCs in the street outside the Greenhouse.  The thing that's bugging me is that I couldn't understand why the PCs couldn't see the sim with See Invisibility.  Did I miss something?  Was he using something other than Improved Invisibility?  
Anyway, just wanted to ask while it was fresh on my mind.  Back to reading!