This is now released with version 1.7.0 !

We've built documentation around this functionality which is going to be released in a next release: https://docs.s3drive.app/setup/import_rclone/

For user who don't have the Ultimate license already, if you would like to get lifetime license with all of the premium features including support for Google Drive, OneDrive, Dropbox and ~40 other back-ends (listed here: https://rclone.org/overview/) you can get it now at discounted price: https://s3drive.app/pricing?q=lifetime

This is to let you know that we've scoped that work internally and expect to release experimental version approximately around Q1 2024.