The ability to send zaps directly to an artist if they were alive, or to a wallet chosen by their estate if they have left us for greener pastures. No more third party profits, we should be able to provide payment directly to the creators of what we enjoy.
And not only that, but to everyone associated with a piece of art. If we see a TV show on "Artstr" that we enjoy but we don't want to direct our payment directly to only one of the actors, we could send it to the show, and an algorithm would automatically distribute those sats to every actor, the director, the production crew, everyone listed in the end credits.