This is a prime example of What I feel is very poor maintenance practices.
I agree, it is not the best maintenance practices I've ever seen, BUT ...
when a fuel leak is properly repaired it does not leak again.
Nor do the bladders leak "near the exhaust". Bladders being in the wing and the exhaust being north of the firewall. AND if the hoses were leaking during the annual they surely would have been caught. Sounds to me like they leaked after being "exercised" during a bumpy test flight and perhaps a character building test landing.
brakes are tested from both sides prior to being released for flight.
They may have worked fine on a low speed taxi test and failed during a high speed landing. You never know.
and there are test sets for all indicators, specially the air speed. this could have caused an accident on a test flight. A simply static system check would have caught this.
Not a requirement in the annual/100 hour test procedures in the regs. Unless you want to hang your hat on "all systems must be in working order" or other weasel words like this one in which case a jammed cigarette ashtray would be cause to reject the aircraft for unworthiness.
You are correct in that the correct procedure would have been to request a ferry permit from airport A back to airport A. And, had I been the IA that signed the original annual I certainly would have protected my @$$ by giving the guy another annual (as you said, Tom, no required time to complete an annual) which should have been MERCIFULLY short after having just done one a couple of months ago AND a lot of work and open inspection holes during the subsequent repairs.
Jim