I must make the distinction here bewteen acceptable pre flight leaks and the in flight leaks being discussed here. Any acceptable leak will be from a tank and will be external, it will usually be a seep and will not even drip. Even any that do drip will be very slow and will not run into any area where it could pool and become a fire hazard. We do not intentionally fly with leaks from pipes or couplings and certainly not leaks in enclosed places. This includes the bomb bay. These acceptable wing leaks are all in places where the minute quantity of fuel would blow off the underside of the wing in flight. They do no not suddenly become major leaks as could a pipe or coupling, they are not under pressure other that the vent system ram air. These LEAKS are of no concern to the safety of the crew or aircraft.
The major leaks being discovered during and after flight are totally different and involve pipes, couplings and the like. Sometimes under pressure and usually leaking into an enclosed area. These are concerning, they could pose a flight safety hazard. These are the leaks you should be talking about, if you want to contribute something useful to the discussion.