Ok @Bastien_Siebman and @Phil_Seeman – this here will work:
- List all projects in a team
- Change all projects to default access level: editor
- Remove user from all projects
- Add user back to all projects
- Change project default access level back to commenter.
Here’s the new Make blueprint: blueprint v2 - add user to all projects in a team (while choosing permissions).json - Google Drive