Hmmm....NWN fell just a tad short of my expectations. Especially the fact that you couldn't really link different servers together with persistant characters (ie. have a number of people running servers with different content on them and transfer characters persistantly between them using some ingame portal). If NWN allows that, then, after the modders are done, NWN2 will be a hit of monster proportions.
Of course, I'll settle for Rockstar Games doing a Shadowrun MMORPG