Ok, first off, let's take a step back here. We are discussing a solution to this unbanking problem, but you and I have gotten off into the weeds a little about hiding actual criminal activity. Bitcoin is not 100% private, but it did take 10 years and this guy inviting the police into his home where they found his physical bitcoin wallets in order for him to get caught. That only supports the point I'm making that Bitcoin anonymity, though not perfect, is still pretty damn good. Good enough to fix this current unbanking problem.
Bitcoin is not magical and perfect, trade-offs have to be made in any endeavor. I personally think the ones Bitcoin has made are good ones. Maybe you still disagree.