I re-read? re-played? Pillars of Pentagarn recently and felt like it was more open-ended, allowing for different solutions. That being said, its reliance on NPCs could be tough for adventure design.
Raid on Nightmare Castle has enough information in it to map out its locations, and that cover is tops. I do love those covers - even the different little gems in the corner of each.
I could see Revolt of the Dwarves being interesting, since you don't normally see mountain/hill dwarves depicted as the bad guys.