Umbran said:
The rules you follow don't have to be the DMG's. They just have to follow a logic the players can learn and use - something more than "the DM felt like it". This can give your world a verisimilitude you won't get using ad hoc characters that have skills and abilities just because it's how you think it should be at that moment.
I think we've veered off into a tangent that really has nothing to do with what the thread was about originally. Nobody is saying that consistency is bad. The original poster, however, was asking about the _letter of the rules_ -- ie, how much detail is needed in creating NPC stat blocks, how skill points should be allocated, what abilities NPCs should have, etc. I don't see anything wrong with a bit of fudging when no-one will notice the difference.