I’ll take a wild-assed guess and surmise the main reason for the rear vision system failure was pretty simple and easily avoided. My hindsight is after all, 20/20. It was deemed too expensive to put the boomer in the back where they belong, opting rather for a more profitable, easy electro-digital solution. If it ain’t broke, don’t fix it.
I expect Boeing to fall flat with the Starliner in coming days/weeks as well. There must be alot of employees at the company unhappy with what they are doing, how and why they are doing it that way. The software-controlled valves in the Starliner booster system are certainly orders of magnitude more complicated than any remote vision system.
Good luck.
LATE UPDATE 15 August: Mission scrubbed.