The B-1B was supposed to be a low cost interim bomber to be built relatively quickly, so they cut a lot of corners that they probably really shouldn't have. Regarding the decision to procure the Sniper-XR pod itself in the 2000s (not solely for the B-1 fleet it should be noted), from the late '80s up until around the late 2000s, podded sensor, Electronic Warfare, and other such systems for combat aircraft were popular, at least among the bean counters, because it was believed they would be less expensive to procure, and more economical to maintain in the long term, than having organic sensor, EW, etc. suites integrated into every front line aircraft. It was also thought that systems could be easily moved around between different aircraft, meaning only a few pods would need to be purchased overall (of course, the proponents of podded systems tended to forget about little things like combat attrition). Needless to say, things didn't quite work out the way they thought they would.