The Battle Lab, Rebuilt on the Real Picker
The Battle Lab is where you re-run a finished match against the same locked opponent with a different team, purely to test ideas. It used to run a hand-copied, cut-down version of the draft screen that drifted out of sync with the real one. Now it IS the ranked draft picker: the same full-screen theater, the same filter and sort rail, the same card art and hover details. The locked opponent lineup you are building against is back as a collapsible in-page roster so you can check who you are up against without leaving the bench. Anything that improves the ranked picker now improves the Lab automatically.