Surprised I didn't see this suggestion yet! Dragging up/down with the stack icon to rearrange layers can be a pain once you have a bunch of layers, especially when you can accidentally select and move other layers while trying to do it. What about holding the touch shortcut and dragging up or down to send to front or send to back, respectively? It doesn't seem like the touch shortcut currently interacts with the stack icon. It would be a huge timesaver!