Protocols don't necessarily need a story, they just need to work and be easy to build on. Those that build experiences on top of it are the storytellers :-)

But, you need to focus on benefit for the user, not the people who made it. You're either fixing the Internet, which everyone agrees is broken, or you are not at this point. So "Nostr: What do you have to lose" (joke).

Nar, seriously, sell to devs on the tech - not story - leave the story to the product managers and marketers of the products built on top of it. Look at other frameworks and how they sell themselves. They don't tell a story, outside of being open, easy, and complex... that solves problems.