How would that be different from searching for them in the vault, exactly? There’s also added functionality that allows you to quickly add them to projects from within the vault / library. Seems that, in that instance, there’s already a solution that works very well.
However, I do agree that it’d be nice to have a ‘Purchases’ list within the Marketplace tab, somewhere. One that lists purchased content from the marketplace - only - and not subscription fees / payments. That’d be nice.