BioWare didn't have much time left for the main campaign on the original NWN game, so it was pale in comparison. It's not bad, but the DLCs are much better and they're included with the game today. If there was a remake, they should definitely be part of the deal too.NWN1 was - at time of release - standing on wow effect provided by fully 3D environment and characters. Gameplay and story were dumbed-down, compared to previous BG games. I dont think NWN calls to be remade in modern graphics as nothing but graphics would really stand out.
The game itself has nothing to envy BG, graphics are better but it also run on D&D 3.0, has a better interface and a campaign design tool which did a lot to lengthen the game's life. So to me a remake would make sense, at least as much as any other game, although I'm still of the opinion that it's better to make a new game than a remake (or a remaster).