Hi I was thinking like that before but you can learn and improve your scripting skills and do it by yourself. Of course it takes more time but the reward is great 
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The best you can do is to take a look at existing modules / PW modules that are available for you to download and open their scripts. I've left NWN since 2012 now, but I can give you a link to what I did in the past even if it was not finished you could find some useful scripts from myself and many other community members (NESS spawn system, Scarface persistant banking, NBDE, jasperre AI, Vuldrick's random quests, etc...) all compiled in one module (some of them were slightly edited by me but all credits to their authors!), as well as a database implementation using NBDE system.
http://neverwinterva...-builder-finish
The module file contains in fact three modules, not only the BG module, the one you may be interested in are "Origin" and "Starter modules" that include the scripts.
I built these modules more than 4 years ago to play in a LAN party with friends and decided to add a persistance system to be able to go on building the module between sessions ans still getting the progress of my player saved. It also includes a portal system, config file, respawn system, treasure generation, rest system, some generic scripts for quests (with persistance), rewards, temple, player and dm tools (not fully finished but most of them are), etc... but many things were not totally finished. Anyway the persistance and most of the functions were working correctly as we were able to play two or three little sessions together. Note that many of my scripts were using local variables on objects (to make them more generic and usable in many different situations), like the generic quest script that allow you to use them in as much dialogs as you want without having to write a different script each time (unless you really need something very special for your quest) with local variables it also allowed to cross quest with more than one NPC.
The downside is that you'll have to download the hak file for opening the modules '>
If you have questions on how something is working you can ask here I pass by from time to time...
Edit: the modules are in french but the comments in the scripts are in english!
