[crabbone]

Nah. Not really. A lot of the useful data out there doesn't need ACL, precise (or any dates at all) etc.

Also, a lot of application-specific data formats already don't care about the "extra" attributes available in various filesystems because those aren't universally supported and implement them themselves in the file format they operate on. For example, DICOMs, or password-protected PDFs or Zip archives etc.

[treve]

Extended attributes (and resource forks) are mostly a liability and anti-pattern because of their non portability. It would be a huge red flag to find something important in there other than cases of backing up entire OS images.