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That reminds me of gnome 1.x... it didn't work because when someone asked a question on how to change one option that was in advanced mode, they would switch to the advanced settings and never switch back. Also, many users, especially those who want to try Linux, feel like they're advanced users, so they will enable that option. For the most part, options are either useful or they're really not, except for really, really advanced users who want to customize everything on their entire desktop. Being able to edit the menus everywhere might be helpful, but I think it would be a huge step back to have more then one set of defaults for beginner and expert and in between.