The Neverwinter online game is nothing at all like the NWN games. The microtransaction model is horrible to put it lightly, I spent about a week there before moving on. It doesn't resemble D&D at all, the only nice bits were the little references to the "old" games, everything from BG up to NWN2. It's just another MMO really. I don't know anything about 4ed rules but it can't possibly resemble any PnP game.
As for more PRC content, I've been working on a module over the past few months (my first ever thing with the NWN toolset) that's a bit like Elidrin's Random Dungeons but with PRC classed enemies. My attempt at PRC AI is incomplete, and pretty pitiful and hacky in places, plus it gets TMI errors occasionally (I'm not too sure what's causing that, but my suspicion is the PRC spellbooks). Basically I started with Bioware's talent stuff and built on it, in retrospect that probably wasn't the smartest thing to do. I've got them using psionics, but haven't done warlock/ToB/truenaming just yet. It's very nearly at a playable stage but it'll still be really buggy and unfinished in many respects. Hoping to keep going with that when real life settles down a little...
Oh, and I made myself a little hakpak of PRC bug fixes, which consists of the things I posted on my thread in the bugs forum. I haven't actually tested most of them though... Yet.