I meant to add a little while back that I remember playing a scenario that involved kobalds who used blow guns - I'm pretty sure that in at least one edition of Arms Law that blow guns are listed as doing impact criticals. A blow gun fired at point blank range doing impact criticals is very deadly (I dubbed them 'mouth cannons'), so with those bad babies there is no need for beefing kobalds up.
We did agree that blow guns should not result in impact criticals - only changed by the GM once we defeated the kobalds and started developing 'mouth cannon' skill (but that is another story, though possibly appropriate as GMs need to be careful what items they give NPCs in case the PCs get them).
On the topic of charts and tables, there is a topic called "what do your players do", or something like that, in which a few people (including myself) have listed some of the tasks that can be farmed out to the players.