I love the concept, the city turning into a dynamic canvas is pure exhilaration—just imagine a swarm of drones choreographing paint trails while holographic billboards react to foot traffic. But remember, the real challenge is more than the tech; you’ll need to negotiate power grids, air traffic control, and a whole legal framework—otherwise you’ll be painting the sky with a lot of red ink from regulators. If we could get a sandbox environment, I’d start with a small cluster of micro‑sprayers and a reactive LED wall to prove the idea before we scale up to city‑wide. Let's sketch a prototype and see how the infrastructure holds up under creative pressure.