I think it's okay to delete Submit news. I didn't see the Edit menu link you are referring to in the author resources menu?
Not sure about localization since the menu item names are considered user input. One idea (but probably not a good one in this case) would be to hide/show menus based on the language shown - ie a new menu module made in French which would show only when French is the site language.
Were there any other things you wanted to change?
Thanks for working on this!