Weird choice but probably very impactful long term: AOC - maybe people would realize that Bitcoin isn't just for nerds, for criminals, for the neoliberals/liberterians/conservatives. Breaking the political FUD could be a big step.
Technological insane bullish step: Tim Cook. Imagine Tim Cook being a calm and convincing Michael Saylor. Imagine nex gen HomePods for every customer being a routing node and every Apple Wallet being a self sovereign Lightning App. With Apples preexisting marketing for privacy etc? Amazing 🤯🤯