The Migration Assistant was mostly a greenfield project and the roadmap was steered directly by feedback we continually received during development. It was built on top of our existing CLI-based tools for migrations, but the web UI and step-by-step wizard with AI assistance was all brand new.

What worked was a human writing the big-picture issue and the hospital decomposing it into a tree of smaller issues, which people could review with more rigor. We also did a few thing that didn't work; in one case we got a bit too over eager in trying to resolve a large slate of issues all at once, and left ourselves with a giant backlog of plans and code to review.

We're discussing internally what can be released in the open, but nothing to share yet.