Updated the Quickstart - it uses the latest roster data (21.3.48), fixes the Miyazaki Phoenix League to actually have the Shikoku Island All-Stars pull from the entire league, a few other minor rules edits, and makes Meiji Jingu less of a bandbox than it was before.
The original is still available as a separate version on Google Drive, same link.
EDIT: Now version 3 is up, and hooo boy did I go overboard. Industrial league is added, feeder leagues for college and high school join in, the BCL now has Ibaraki and Kanagawa added...and Jingu is not a bandbox anymore.