Use case or problem
I link to (transclude) images outside of the vault folder by using the

syntax to avoid putting too many imagines into the sync’ed folders with the understanding that these files won’t be available on my other devices. However, these transclusions do not work as cover images for Bases when either include explicitly as a property, or via the files.embeds construction:
file.embeds.filter(value.containsAny("png","jpg","webp","svg","jpeg")
Proposed solution
Making transcluded images work for either a property or count as an embed within file.embeds would be great.
Current workaround (optional)
None. The file needs to be in the vault folder for it to be usable as a image for Bases.