Closing the bug, since the Upstream developers have objections it's probably better to discuss this with them, if you feel strongly about it.
With regard to http://bugzilla.gnome.org/show_bug.cgi?id=302757 - "It turns out that the solution was to fix xdgmime and shared-mime-info. GnomeVFS and shared-mime-info HEAD will work correctly, i.e. always sniff." ** Changed in: nautilus (Ubuntu) Status: Unconfirmed => Rejected -- Gstreamer, Nautilus and thumbnails https://launchpad.net/bugs/4491 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs