You're right on the mark here. I saw rr used at Mozilla to diagnose and fix flaky tests that failed just often enough in CI to make life miserable, but were nigh-impossible to reproduce in a local development environment. Being able to take that to the next level and collaboratively investigate a bug using a recording that captures it is game-changing technology from the future.

Imagine a world where instead of ignoring, skipping, or marking "known failure" on all those flaky tests your CI hits (we all have them) you could capture recordings of them, and then actually investigate and fix them! That world is possible!