This more of a comprehension question about FAL in TYPO3 6.x.
I understand I can create new storage locations, and that I am not forced to use /fileadmin/ anymore. As FAL links aren't stored directly in tt_content, I suppose it should be possible to define rewriting rules for FAL links.
E.g. "replace /fileadmin/ by /storage/". Or "for all pages in this branch, remove /fileadmin/ and prepend http://static.domain.com". Etc.
But - on an integrator level that doesn't involve heavy coding (like in https://github.com/beechit/fal_securedownload) - that's not how it works, or is it?
You can define the fileadminDir in the install tool, see
FAL Securedownload is only needed if you don't want to reveal the actual location of the file or implement Frontend User based access control for files.