You are welcome. Here are my thoughts:
You wrote:
Direct transfer from donor/sponsor to recipient with the trustees being only in charge of checking whether the distribution follows two rules: two working circles have given their OK for a proposal
Maybe I misunderstand here, but if the donator is donating directly to a project, why would they be bothered when a working circles tries to say 'no' for some reason? Wouldn't they just donate anyway?
I'm not 100% sure what you mean by 'multi-sig' - does that mean that the money can't be moved unless both parties agree and sign? What happens if there is a dispute and the donator can't get it back?
I'm also not sure I understand your suggestion regarding the removal of the trustee working group. Isn't the trustee working group the key, foundational group that has the most power?
If the result leads to dissolving the working-circle (in this case the trustees), any five Steemians with 2000 SP may set up a new working-circle with the same topic.
This sounds like anyone with 2000SP can just take that position.. What happens if 10 groups all want that position?
Also, the idea that working groups work together as a whole to upkeep the integrity of the network/system/foundation makes sense, but aren't the trustee group and initial founding members the ones who ultimately decide which working groups get established? What's to stop them from only authorising their friends, for example? Maybe I have lost some of the details of your previous post - if so, please remind me. :)