I explained to the guy who's shop it's in there are three ways I can do re-wiring.

Fast, correct, and beautiful.

Choose two.

Reliable might be a fourth, or an aspect of "correctly." Soldered and heat-shrunk connections are going to take far longer to complete and last years longer than crimped connections, as well as being impervious to water.

I discovered a new technique. I use safety wire (or twister ties) to bundle all my wires until I'm all done. I put off taping and looming until EVERYTHING is complete, tested, and the vehicle running. That way adding or subtracting a wire from a particular bundle doesn't mean repeatedly looming and unlooming.

Another trick I do is to include a "spare" 14AWG wire in every major bundle, for the circuit that inevitably got forgotten. Big bundles sometimes get two.