Comment: Little inconsistency

Well, if you are not authenticated, you won't see unpublished boxes. The aim here is to allow associates to test boxes in preparation, before making them publicly available.

If you suppress this visibility, then you have to publish boxes and to rush to the front page to test the result...

Therefore, I believe that rendering unpublished extra boxes to associates (with a little warning signal aside) helps a lot during the preparation of new elements pushed at the front page.

Actually I would like to extend this to navigation boxes as well...

If you have to push away some boxes, you could create another section and move boxes there...