My beef with the craft and profession skills is that rules for them are too much effort for too little payoff. Perhaps it's just the way that I run my games, but in all my years of playing 3e, a PC's craft and profession skills made about as much difference to the game as the fact that his hair was black or that his eyes were blue. It simply wasn't an issue that we focused on, in-game (we did have some rules for how they would translate into extra equipment or wealth for the PC, but that happened out-of-game). And if my experience is typcial of most gaming groups, it's not surprising that they are left out of the PH.