Another thing to keep in mind, just because you pay for something doesn't give you the undeniable right to do whatever you want, try running onto the baseball field at a game or having your very own campfire at a theme park.
I will love to see how you tackle this. I have had friends try to build the same type of worlds and turn them into a profit. The playing field changes when you have actual customers, who are paying for your products.
I have great faith in the staff, but this is one of the aspects of Layonara and NWN that I don't see being possible to bring over to a packaged product that is being paid for by the consumer. At least productively.
I am not being negative. I think you will create many things that are positive and amazing, but to do so, some things will be lost. It is the nature of the game.