I agree "it would be found" but normally by people who want to use it, rather than by newbies who don't know what they're doing.
Another suggestion would be to place the icon at the bottom of the left icon column with the "Advanced users only" health warning added. This would cover any "features list" problems and newbies would tend to avoid it.
I don't think a default automatic registry back up is necessary (much too complicated and would bloat the programme) BUT "Show prompt to back up registry issues" in Options>Advanced, should definitely be the default (why the hell is it an option?).
Which brings me to the point, in Options>Advanced there IS a health warning ("For advanced users only").
Apart from "Only delete files in Windows Temp folders older than 24 hours" and "Show prompt to back up registry issues" (which should be a default anyway) messing with the settings (Minimise to system tray, Hide warning messages etc. - advanced user stuff?) would hardly compromise your computer.
However, fiddling with the Registry carries no warnings at all.