I would like to see a link for the Scout Tower added to the Guild menu on the left hand side... Think this would be a proper place for it in addition (of the removal) to the link on the structure in the Guild Manage page..
If you don't own the Scout Tower then when you click it you get a notification that says "You don't own or have permission to build/edit structures" (if you don't own the scout tower but have the permission to build, clicking the link would take you to that screen) .. like how it kinda works for the Advisor