I've already reinstalled and been playing NWN for about a week now along with Entrop, Alex, Amy and a couple other people...
As for ideas and suggestions...
First and formost, I require the CEP v2.0
I'd love to see a ninja and samurai class
Goblin Spider Riders/Worg Riders
The werewolf model stolen from that White Wolf server we used to play on
I'd LOVE to see the ACP 3 (Alternate Combat Animations Pack 3) used on the server, incorporated into the hak. Yes, you can download and use it in the override form, if you wish, but if you use it in the server hak, you can change styles on-the-fly and in-game via an addition to the radial menu.
I'd like to see vampires and garou make a return, but I'd also like to vote against nerfing either to the point they aren't playable... Again. I agree they will need to be nerfed a tad to keep them in tandem with the other races, but having vampires drag a 200 lbs coffin around is just being retarded.
I'd like to see a script or checker to award experience based on the number of messages typed by a player that doesn't begin with "//" so that RP experience being rewarded doesn't require there to be a DM on at that time, tho I think this might require "listeners" following players around which I hate.
I dunno... I'll think of some more later.