Now that I have the news (thanks @ee) of this PR that will make unshared Scratch projects inaccessible, I’m archiving as many projects as I can, starting from ID 1. If you want to aid in this effort, I’ll be providing some code soon.
Maybe it could be a browser extension that automatically archives all your project even when/if the update releases?
Well but then it would only archive a select few projects - the script I’ve written archives all projects, starting with ID #1. https://github.com/micahlt/sbarchive