Incorporate iCloud Filemanagement
As my MacBooks SSD isn't too big I've enabled iCloud's storage feature. InDesign doesn't really like when macOS suddenly decides to delete the local copy of files I've embedded into my document and it's a hassle to deal with because there is no way to redownload all the files I need within InDesign. It would be super useful to see a better description of what happened with an embedded file and have to opportunity to download it without having to jump into Finder.
I've read that Apple made it possible to delete a local copy of a file in macOS Catalina, maybe there is a way to make sure that a certain directory isn't deleted. That would be a nice workaround, too.
Adobe: macOS features an iCloud feature called "Optimise Mac Storage" - this means that macOS will remove old/or very large files from the SDD/HD and replace them with a ghost file that instructs the file system to download the file when needed. These ghost files unfortunately have ".icloud" appended to their filename which due to how InDesign is programmed, is not compatible and sees these as broken links. There is no automated way to obtain the files.
Ideally InDesign should recognise the ".icloud" ghost files and request the file from the OS appropriately. Currently the workaround involves manually visiting every linked file's folder, and manually instructing Finder to download the file - this is a very laborious and repetitive procedure. (iCloud does not give you the option to protect certain files/filetypes/folders - nor should it, as this feature is necessary for designers working on devices with limited storage.)