Duncan,
Thank you very much for building the Layers Panel. It will be so helpful to me in managing the stacking order of objects and managing their visibility status across the various device layouts.
One additional request for a future update: incorporate a visibility toggle icon next to each layer item in the list. This would just make managing the visibility of each item a little bit more efficient, not having to sweep over to the Arrange Panel on the right side of the interface.
Thanks, again, for building the Layers Panel.