Huge swathes of "industry" use crimped connections, not just the automotive side. Properly made, there will be little to go wrong. Decent ratchet crimpers are to be had if you do online search. Just run a Battery conection front to rear on my (7.5M) camper, tests out well and the "drop" is negligable. Not everyone will do it, but I (as often as I rember) dip the wire end into some Vasseline before crimping up, (old habbit`s die hard) a throwback to marine work, where corrosion can be a big problem.
On "classic" work I can see the the "purist`s" might look down their noses, at multicoloured crimps. But we all have choices, and so long as it`s safe and reliable?.
Heatshrink sleeving can be useful. (and an old hairdryer).
Pete