Nice manifesto. You went from "
I’m not the best at reading measurements" to full anti-measurement expert in a weekend.
You are right, it's not necessary to spend a fortune to get good and accurate sound. For many of us the used price of NS-10 are quite off-putting. They myth of it's unique transient response isn't mythological, it's a bog-simple sealed woofer with limited bass extension who's response (transient or otherwise) matched by many other speakers. And many of the other mysteries like tissue paper over the tweeter are indeed mysterious due to the response errors originating in the woofer.
So yes, an introductory doesn't have to be expensive, in fact probably half the cost of a used pair of NS-10.