I'm one of those who WANTED to hate Planescape...
"What's this?! Alignments?! Those are SO outdated...and this great ring isn't like any afterlife I ever knew about...and now I have to shoehorn everything....and how the heck can 1st level people exist in the Abyss?! And this stupid lingo?"
But then I read it, and it grew on me. It was all about possibility, potentiality...re-interpreting how you saw things, allowing you do to whatever you wanted to it....so inclusive, so flexible, so philosophical...
Oathbound does that whole inclusive thing for me too, but it's got an edge to it that PS doesn't...it's like getting hit on the head with a mallet....it's not belief or faith....it's test and failure.
Nyambe is GREAT. I love settings that twist the rules in new directions.
I also enjoyed Dark Sun, Al Quadim, Maztica...things that took the worlds in a new direction.
The least favorite ones? I'd have to go with FR and Dragonlance, mostly because of the big things being done aspect. I agree 100% with the 'someone else's homebrew' feel...and I really dislike the idea that "Hey, this is EARTH, but with MAGIC!".....whoppee...I could do that campaign setting drunk.
I mean, there is the argument that "FR's a big place," but if you're going to have to go off into some unexplored corner of the world to get away from important NPC's, what's the point in having a campaign setting to begin with?
I've got nothing personal against the settings, but they're the least appealing to me for those reasons. They're easy, they've been done...
That said, I think I may actually research FR to do a postapocalyptic FR/Call of Cthulhu crossover...I think a setting with unbeatable wizards and dark elves is a perfect place to introduce the idea that these guys got NOTHIN' on the real bigwigs.
What's that Mystra? Feeling a bit squaoumus?
