i came up with similar ideas years ago, hopefully now someone is coding it :-) here are the links to older threads:
http://forum.doom9.org/showthread.php?t=44028
http://forum.doom9.org/showthread.php?t=49383
http://forum.doom9.org/showthread.php?t=103426
i'm not a filessystem/driver programmer, but i'll help whereever i can.
regards,
hanfrunz