Goes back to the P-3 mentality, which is understandable. Electronics in the P-3 had the nice tendency to overheat/catch on fire, coupled with the difficulty in isolating what was faulting, a separate observer was necessary. In the P-8, from what I've heard from our instructors, we haven't had any SFF emergencies yet, so we don't know how difficult it will be to isolate/fight a fire like this. Not being a pilot, I can't speak to how difficult it would be for the CP to cover the observer's preflight duties in addition to whatever they do, but I will say given all the electronics in the back, I see why we keep the observer position for inflight emergencies. Maybe in the following years when we establish the reliability of our systems in the back it will change, who knows, but for now I can understand why we do things the P-3 way.