Idk if you’ve ever tried reinstalling windows while working on active projects but it’s nightmarish. If it’s not on the primary drive, or is a UE5 project, a project will not re-add itself to the launcher on launch. The only way is make a new project in every project directory to force refresh it but even then it doesn’t bother checking child directories. Engine versions won’t add themselves ever. But it’d be so, so simple to just have an add button for either where we just point it to an existing directory.