The backup camera is one of those things that you mock until you get one, then you can't fathom living without it. But you can easily add an aftermarket one to an existing system.

I wound up paying for Subaru Starlink when I discovered that any dealership can sell it to you, and several sell it at steep discounts. I'm paying $10 / month for a 7-year package that includes emergency response if my airbags go off or the car flips, stolen vehicle location, and some other things I really don't use. It basically stays out of the way. But when I had a Hyundai, I'd regularly get BlueLink popups about "special savings at your local dealership" and long story short, that's the main reason I didn't buy another Hyundai.