Display Lids

If Display Lids were added in, they would be used mostly for looks or as things such as openable windows and display cases. They would be crafted with one glass pane in the center column of a crafting table with one wooden plank on each side, and if you clicked on them, they would open like a trapdoor so you could pick up, break, or toggle whatever is on the other side. This could be revolutionary for building, and they could even be used to add some detail to redstone contraptions.