Use case: When determining the version in https://github.com/mdn/browser-compat-data/issues/26484, I would have liked to open https://mdn-bcd-collector.gooborg.com/tests/api/EXT_shader_texture_lod?autorun in BrowserStack Live, and simply switch between browser versions to see the results, without having to click "Run" and wait for the results. This could save significant time when testing multiple browser versions.