With an icon, i think it will be easy to notice. Maybe a gear, rench or something like .uno:ControlProperties (plier crossed rench) or .uno:MoreControls (option box and check box).
Reasonable enhancement, but selection of the icons needs to be icon style aware.
This is off the main menu, where there already are several icons in place:
File -> New
File -> Open
File -> Wizards
File -> Exit
Help -> LibreOffice Help
Created attachment 106815 [details]
what the gear icon looks like
Planning to use applications-system.png from tango's icon set which looks like a gear.
Created attachment 106816 [details]
3 possible icons
Looking further over the tango icon set, any of the 3 icons in the attached screenshot will do, so if you have a preference, please let me know.
Patch pushed with gnome's applications-system.png - https://gerrit.libreoffice.org/12232
Yousuf Philips committed a patch related to this issue.
It has been pushed to "master":
fdo#80716 - Adding an icon to the Tools > Options menu entry
It will be available in 4.4.0.
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.