1680x1050, aspect ratio

At least Apple TV recognizes and can use a 1680x1050 monitor, which is nice. However, it will fill its 1920x1080 (ie. 16:9) contents to fill the entire 1680x1050 (ie. 16:10) screen, which means that everything is stretched vertically. In other words, the aspect ratio is all wrong.

Is there really no way to force Apple TV to retain a 16:9 aspect ratio even when using a 16:10 monitor? Obviously this means using letterboxing (ie. empty space at the top and bottom of the screen), but that's just fine. The wrong aspect ratio is a million times more bothersome. One would think this is something that they could code into the system in ten minutes.