Certainly sounds like a poorly maintained aircraft.
However I think that some items on your list are unwarranted and perhaps show your lack of knowledge about the type.
As someone has already pointed out the incorrect operation of the original auto pilot can cause pitch excursions.
Many if not all Aztecs were only equiped with one hydraulic pump from the factory.
Aircraft of this vintage very often did not have Vmca marked on the ASI.
The position of the circuit breakers is where they were put at the factory.
As for the mixture lever positions, so long as the levers allow you to get the full range of mixture settings and they are both even in their settings I don't know that it is a problem.
The flap indicator,....... I guess you have never flown the Cessnas with similar gauges.
Yes, there are some major concerns, the biggy for me is the door, Aztecs don't fly well with the door open and blanketing the tailplane. I would not fly it until this was fixed.
Some of the other items are typical of an older plane, they should be fixed but are quite often left.
Some items like the sticky man press gauge are easily fixed.