I have a few problems with the resolution on my Macbook Pro 13" Late-2011.
1. I can't select a 16:9 resolution in the Starcraft 2 HotS Graphic Settings...
2. when I type a costum Resolution in the Variable.txt - 1280x720 - Starcraft 2 HotS stretch this Resolution in fulscreen mode.

What can I do? I like to play on a 16:9 Resolution on Mac with black strips over and under the Screen.