This was buried in soem menu thread, I'm sure alex has noted it and it's not here to build pressure, but simply to move the request where it belongs:
Issue: The hard-coded defaults of ML sometimes are pretty arbitrary, plus they clutter the recent "Modified" menu. If some mis-configuration is done, resetting to ml defaults isn't a good option because a lot of carefully chosen settings are reset just to catch one problem. The current solution is to file-copy the config files on the card, but that cannot be done from the camera (quckly).
Suggestion: In addition to the ML base config, add an option to save a USER base config and base the Modified menu on this. Add a "Reset to USER defaults" option next to "Reset to ML defaults". This additional safety net would invite more feature tryouts over reboots and enable the users to fall back to their own working config in a panic situation.