Ever want to open a project in another editor and realized you needed or wanted to download something for that new project while still working on the previous one? Yeah, This issue gets to be ridiculous especially if you're trying to download the 3D Game Kit... -.-
In simple; The ability to download something for a separate project without having to wait forever to continue on your main one.
In simpler forms; The ability to multitask! Why wasn't this already a thing? lol