This is a fun idea, and the question you asked yourself is the right one: what would make someone actually spend two minutes on it? Turning the portfolio into something people can play with answers it well. I especially liked the care in the details — the genie effect numbers, the server-side top score that cannot be faked, and the Lighthouse accessibility score of 100. Cutting the achievement system and music player shows good judgment too. The Terminal and Time Machine are the parts I would try first.