I think it would be interesting if we could have a feat that allowed the player to make various traps. Hunting traps for large and small game, non lethal 'capture traps , booby traps for area denial and whatever.
I think it could really add some depth to the game if i had to worry about falling onto a punji stick or getting a face full of poison gas when breaking into some guys home. Also seems like it would add more sticking power to individuals and weaker clans.