I think xattrs (extended attributes) are a powerful feature almost nobody uses because the UX is so bad.
I think it would be great for Nautilus to offer good out-of-the-box support for xattrs.
These features would, in my opinion, offer a good xattrs UX:
- A panel for xattrs on file properties.
- The option for show arbitrary xattrs as columns on list view.
- (May be) A macOS like color tag system.