Yeah. I use it to do extensive work on full source bootstrapping, deterministic operating systems, compiler debugging, kernel debugging... all with one tiny go binary without endless NPM deps like pi (which /I/ regard as trash)

Works better than opencode (pi based) or anything else I have tried for my needs, and by far the prettiest and easiest to reason about what is going on.

But I will bite. What does pi do today better than crush for your use cases?

What's wrong with it? I like Crush. It's hard to find good harnesses that don't pull in mounds of Javascript like Pi and OpenCode.