Should NWN in ganeral, and PotM in particular, be modified to make it more like PnP? The answer to that is...it depends. Remember one thing...no matter how much coding you do, no matter how much time you invest in modifying the rules, NWN will NEVER be PnP, for one simple reason...its a computer game with dozens of players and no DM.
Yes. I know there are DM's. They do an EXCELLENT job running adventures and plots and such. But there is no "DM." PnP works because one person is making decisions that affect a small group of players. He or she knows the players' classes, levels, skills, abilities, items, etc. etc. etc. He or she tailors adventures to these players and all of those things I mentioned. The pace of the game is dictated by the interaction between player and DM. If the DM screws something up and realizes "whoa...this thing will wipe the party out," or "meh...this won't even be a challenge," they can alter it on the fly with no consequences but better fun. A good DM does not simply roll some dice and have a random encounter kill the group.
Yet...that is EXACTLY what happens in a computer game. The "DM" is an unthinking, unfeeling bit of code programmed to do very specific things with no regards to scaling, consequences, etc. It simply generates a pre-coded area, spawns in pre-coded monsters with pre-coded treasure, and kills whatever wanders by. Nothing gets altered because you are too low level, exhausted, out of spells, too powerful, have too good of equipment, or for any other factor. Because of this, and because the action is LIVE, with no chance to pause, think, rewind, fast-forward, or anything else, NWN will NEVER be like PnP. If you think it will, you are fooling yourself.
Because of this, there is a limited amount of room to make NWN like PnP. And, in fact, many, many things about NWN are NOTHING like PnP, because it is only BASED on the PnP rules. It is still a computer game. As another point of fact, a lot of changes have been made moving NWN and PotM AWAY from PnP (such as spell durations, damage, extra Feats, etc.). Moving towards PnP rules is not always a good idea, especially not for the sake of simply doing so.
Personally, I would like to see a lot more transparency in the whole process. I would like to see changes, and reasons behind them, spelled out a bit more explicitly. Why? Because it helps me make an informed decision as to whether or not I find a change acceptable, and whether or not I wish to continue playing, or if perhaps I am simply not having fun like I used to.
Tell us the reasons behind the changes...even if its not a good reason. If you TELL me you are changing something to make the game harder/more challenging, so be it. If the change is to encourage RP, so be it. Explain why. If the change is simply for the sake of bringing something more in line with PnP, so be it. But have the decency and the balls to TELL us. If we don't like it, be prepared for complaints. Perhaps even people leaving. But you might also have people appreciate the very fact that they are treated at least partially like adults, and who might be more accepting of such changes.
It really isn't all that much to ask.