Hi! I would not call it “circular” since people are literally improving environment for sats, not circulating it infinitely. I believe, such work literally has to be rewarded by neighbors rather than a start-up project’s fund itself. I would not regulate their spendings and rather provide a market where it is literally beneficial to use sats, e.g. connect them to farmers so they could literally buy food.
Another thing ur approach seems to overlook is actually attesting to the work performed in a public project. Having an “oracle”. I proposed this solution: https://dk14.github.io/mega-peers/docs/#/README
Unfortunately, I ran out of financing since I had to scam scammers in order to get it (some idiots thought they can use this approach for gambling, without realizing that I meant environmental risks rather than predictable gambling).
Feel free to contact me by creating issue in my github or here.