Oh I have multiple complete NWN sets 8)
The biggest problem is the frigging server whichcraps out at about a dozen players.
I was heaviuly invovled in two of the largest PW NWn attempts, ALFA and AVLIS. But inthe end they both had huge scaling problems. Additionally, although people RPd to some extent, it really didnt effefctplay much. There were a lot of dynamics issues but that would be a long post and its late.
But in its DM-ability… when actively Dmd for small, closed groups of people, then yeah ID say NWN came the closest.
But you do see RP in other places. Im involved with a bunch of really good ROleplayers rigth now in CoV/CoH and they arent that hard to find on Virtue-- which is a sevre staked out by the RPers.
In contrast Ive seen almost NONE in GW.