Thanks for sharing your ideas! These might be some ways to start and provide proof of concept and evidence.
On your second point: Do you think teachers or districts would be allowed to adopt a new currciulum someone offered them? In Germany, where I am from, that would hardly be possible.
Bowman’s explanation for why street votes would succeed at bringing about new housing development is that existing landowners in a particular block would see the value of their land rise when the block upgrades its construction rules. A block is a negligible part of a city so the increased supply when one block is densified has a negligible effect on the housing price. Upgrading the block is cleary in the interest of its owners.
However, it’s less clear that introducing the possibility of conducting street votes in a particular city is in the interest of landowners because the effect on house prices is no longer negligible if many blocks decide to upgrade.