Friend Tonden Ockay,
What we are doing is a multi-module project, the first module is CEP2.1 only (so easy entry requirements) - sister modules will require additional hak paks. Main module is presently 1337+ Areas (no joke that), it and each of the sister modules are expected to top out at 2k or less total Areas (yes it runs stable and smooth). Our present server is setup and capable of running up to five modules of this type, so our project will span multiple modules and contain as many as 10K Areas, with haks allowing for many many more Areas beyond that.
NWN is an amazing and robust engine.
We do continue to add to our module (updating about twice a week typically) and intend to continue that pretty much as long as there is wind in the sails.
Overall, we are building a world, some outer planes, and other inner planes regions, and ultimately a fully fledged D&D style campaign world. The place is feature rich too, with over 100 custom spells, and systems to allow fly, swim, climb, jump, squeeze-thru, and even window use for rogues.
Visit anytime, let me know you'll be visiting and I'll be happy to meet you to 'talk NWN' if you like.
Best wishes to you.
Be well. Game on.
GM_ODA