Are you _really_ sure you'd want that (I think my eyes wouldn't like it)? You can run it at 1920x1200 though.
A dropdown box does not clutter things. Seriously. It would take 10% of the space of the current weird graphics, and the new one actually frightens me: how is it going to handle setting the resolution of external displays or overhead projectors?
But clutter is not one of them when you replace it with a combination of two radio buttons and 5 fucking huge buttons, which altogether take about 4 times the surface of the corresponding open dropdown.