We should be able to set the Origin / Center of transform for each layer, along with the ability to set the stretch mode so that, for example, we could set a layer to "Stretch Screen" and set the Left, Right, Top and Bottom to "20" and it would fill the screen, with a 20px margin.

The current transform system only allowing us to set the X, Y, Width and Height is broken, and using the Sizing dropdown does nothing