Isn't that more or less how we get the membership of the US Federal Reserve? https://en.wikipedia.org/wiki/Federal_Reserve_System

Also, it's not clear what "not being part of the government" means if some positions are politically appointed. I suppose you're saying new ones can be appointed but old ones cannot be removed, but then that either makes it a lifelong post (which sounds worrisome as they'd be a prime target of corruption) or someone else decides their removal (based on what?).

> Any attempt for a non-elected body to control how money is spent opens up a whole host of potential problems. Instead, it is the government that would decide how new money would flow into the economy, i.e. what that new money was spent on.

I'm having trouble understanding this because the sentences appear to contradict each other in part.

> Let's put it like this, if you wanted to game this particular system, how would you do it?

I'd have to understand it better, first. But in general, a corrupt person would divert the supply of money to flow to them or people who would give them kickbacks (buy their stuff, hire their friends, etc.). They'd divert money away from whatever groups they did not like (political, religious/atheist, minorities, you name it). They'd use control of supply to direct flow to favored media outlets and away from those critical of them. I'm sure there are plenty more evil things to do that I haven't thought of, as well.