After reading over the various benefits of ZFS, an open-source file system on the OpenSolaris web site I think the Amiga could really benefit from this. In addition, Apple is also looking to include this in the next release of OS X. If Windows supported it we'd be in the back trying to catch up for new devices.
Go here to read more about it:
http://www.opensolaris.org/os/community/zfs/whatis/