The tools they used for the game may not be very user friendly.
I have programmed JAVA in netbeans. EVERYTHING is more user friendly then netbeans. Even programming in notepad is easier. <img src="/ubbthreads/images/graemlins/badsmile2.gif" alt="" />
They may require the use of another program, or include proprietary software they can not distribute.
If its from microsoft I can get it from my school <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" />
Also, the Larians may not have the resources to write up any documentation on how to do everything, even if the programs could be made available.
I don't thrust documentation I only thrust code. And it would give the PIF something to work on <img src="/ubbthreads/images/graemlins/silly.gif" alt="" />
I don't think they ever said there would not be any tools released, just that it was unlikely.
Would be nice if they made the engine open source in a coupple of years. Lets say after the release of <img src="/ubbthreads/images/graemlins/div.gif" alt="" />˛
IMHO the main reason why they won't do this is because they'll be giving away valuble company secrets. I can imagine that the random quest & level generator would be reused in <img src="/ubbthreads/images/graemlins/div.gif" alt="" />˛. Theire would be many developers that would just die to get a look at those codes.