It’d be fantastic evidence if we could actually look at documentation of how these small group trials have worked out. Honestly, it’s the first I’m hearing of them.

I don’t understand the word “paid” appearing in your third bullet point. Wouldn’t a communistic society operate without money? Generally speaking, what would a doctor’s motivation be to get 11+ years of medical school + residencies, then perform a difficult operation on a patient that has potential for complications and blame? (In a capitalist society, the motivation would be “Helping people” plus “Money”, tied with hospital-level protections against malpractice suits, but I’m curious about your answer)