As the title implies, it would be super handy to have a render toggle. Or maybe something to open the matte objects properties, so you can easily change settings there?
Just came around to finally implement this.
I added a right-click menu with options to enable Renderable, Camera Visibility, Unhide, Unfreeze the selected objects, uncheck the Hide Frozen and refresh the list.
I am reluctant to add Layer controls as they can mess up the scene, but added the Name of the Layer to the list to make it easier to change the Layer in the Layer Manager.