Move from gnome-session to unity? If unity-session would be part of unity then it might be easier to update things, no? Now it it looks like you have make changes in many/multiple places and in the end these changes makes sense only if unity is installed.
Move from gnome-session to unity? If unity-session would be part of unity then it might be easier to update things, no? Now it it looks like you have make changes in many/multiple places and in the end these changes makes sense only if unity is installed.