it will be a good idea if the fonts also been collected while collecting the project, no need to link or need to be active in the new location where the collected project is being worked on, just keeping it in a folder will help the user to install the fonts if they don't have them in their system (since most of the fonts aren't available on Adobe Fonts). It will be a great feature that helps a lot of people who use a third-party method on the project pipeline instead of sharing via Adobe CC.