You might look at the Archbarony of Blackmoor in the NW corner. I planned out a NWN campaign there some time back, but it never got going for "player reasons". Attractions included:
- Pretty remote, small scale, the biggest town is about 1700 people. Lots of little villages and small strongholds.
- Highest level NPCs are something like level 13.
- Fat evil corrupt baron running the show but his control is less than complete, plenty of scope for PCs to swing both ways.
- The Oerdi "feudal European with wizards" ruling class is sat on top of a celtic-style Flan underclass, with some interesting druidic and old-bardic magic going on.
- A pirate town full of wererats.
- Sea barbarian raiders from the northeast.
- A traditional bardic college in a major village (old-style druidic bard, not arcane bards).
- A monastery on the edges where they foretell the future.
- Wolf nomads to the south, Iuz and pirates to the east, the mysterious (i.e. potentially world-ending) land of black ice to the north, and nobody even know what's to the west.
- Blackmoor City is abandoned to monsters sent by the mysterious "Egg of Coot". It has a very old castle, with a very old dungeon underneath. And the rightful ruling council of Blackmoor is trapped in a timewarp in the inn.
- Several nice big marshes in which anythign could lurk.
- Officially Greyhawk druids don't do human sacrifice these days, but if there were going to be an exception it would probably be Blackmoor.
- Various options for undersea adventure, and a generally nice local priesthood (Xerbo) who go ballistic if anyone tries to recover items lost at sea.
- There's this weird entity called The Egg of Coot that sort of sits there being inscrutable and occasionally wiping out towns. It makes automata and homebrew monsters. Something for when they hit higher levels...
- Iuz came here once, and met the old magic of the Blackmoor druids which he couldn't understand or master. He backed off to consider his options. His forces will be back one day. If you ever go epic...
- Last but not least, where else could you run make up an adventure called "Return to the Temple of the Frog"?
