The problems you've outlined really are pretty normal teething problems for a system like this. The best argument in favor of cancellation is cost. Personally

The problems you've outlined really are pretty normal teething problems for a system like this. The best argument in favor of cancellation is cost. Personally I would never have produced a new strike aircraft. With the advent of cheap guided bombs what you really need is complete dominance of the air and big, big bomb trucks. I would have bought another thousand F-22s and spent money upgrading the heavy bomber fleet. Nobody asked me, though :)