Finally a result!
I would also keep my fingers crossed, as in your very post you wrote: "The fuel pump puts out a good stream at the fuel rail connection on top of the engine."

But if the problem really turns out to be cured, then I'd say perhaps it would be wise to carry a spare main pump, just in case.

The reason I say this is that I probably drove around with a non functioning in-tank pump for about six years. Not until I started getting cold running problems did I go through the fuel system like you did discovering several worn or broken items which did not actually stop the engine running.

In my case I replaced the sender unit with a new one as I deemed the fuel pipes too rusty. It was then that I discovered Art's website.
I know of someone who ran a new wire through the unused fuel pipe (instead of drilling a new hole) and then sealed it with the same epoxy stuff as is in the "knob".

Oh, and about the temp sensor, at least you now have a known good spare.

If you have not yet discarded the old fuel filter, then it might be interesting to cut it open and look at its innards. In one I disassembled, I found a very fine grey discolouration, and nothing else.
As you may have seen in the photos I linked to, even after 25 years the tank looked pristine inside and I was most likely the first to remove the sender unit since the car left the factory.
I would guess this fine grey dirt to be carbon brush particles of both pumps.