I think a big study of those of our European (not US!!) neighbours whose HC systems work well, quickly, efficiently, and while they may include a co-pay, are fair depending on means.
Countries such as France and Netherlands maybe, I'm sure there are others that people know about. This idea that the NHS is and always was the best in the class will have to change. It never was, and it never will be now.
There are far too many advances in HC now so people are living longer and thankfully are being cured of diseases that once had a few months to live written on them. NHS is strapped and doesn't seem to be able to afford the latest drugs etc. For instance, Mounjaro or other obesity reduction drugs. Not available on NHS so people who can't afford them get ill with obesity related illnesses. Sounds like false economy to me. And there are lots of other examples which others might know about.
I will say that from what I know, the two week fast track for suspected cancer is a great thing. Does it work well, is the follow up quick enough and so on, I don't know.
The subject is emotive. The NHS is part of the fabric of our lives and that is very hard to change. But we'll see.
I can't see a wholly private system ever, like in the US, but I do see a mix of fully private (self funded), contracted private (paid for by NHS), and full NHS in due course, and some of that is happening now anyway.