I could request extensive btrfs support - including
1) A 'system restore' GUI interface.
(Actually I think it would be nice that - if btrfs is used - that there is a separate login option for managing backup and restore options and ONLY THAT - a 'safe mode 'of some kind). Facebook are heavily investing btrfs as a file system backend (and it will be terrific when FD22 is released), but I don't expect then them to provide GUI tools)
FYI: SuSE 12.3 has a 'Snapper' application (command line as well as a simple YaST applet based on "btrfs utilities") but it is very simple and more a demonstration than really usable IMO. Distributors could work together on such things.
-- Peter Laursen
.