[kevjs1982]

Have added limited choice on editing submenus to git - will be released next version.

You can add upto 5 items for 2 submenu sets (Playlists + Addons) Then you can also change which submenu set you'd like on your menu item.
Allthough this is not exactly what you guys wanted in being able to edit all submenus,

Will you also have the ability to choose the "standard" ones (e.g. under my Films playlist add the Video's submenu) - it's a shame you loose them when you replace Videos with a playlist.