I'd be fine ditching bluetooth. I'd be fine with an AUX cable. Most people have their phone on some charging mount anyways, so there's already a cable running to the location so wireless isn't much of an advantage here
Yep I can confirm this works quite well since it's what I used for over a decade until I got a new car a couple years ago. Bluetooth can be annoyingly flaky in many cars but plugging in a cable literally just works. My old sound system and traditional controls worked great and I have considered replacing the more modern system that came with my current car with something more like the old one.
My pet peeve about BT in cars is that it can interrupt phone calls when your spouse starts the car or arrives home. I guess it's nice that cars have good BT range, but it would be nice if it could sense whether the phone is in the car, or perhaps 30 feet away, in my bedroom (and I'm on a call!).
