I love the current search features of GQview, but it would also be nice to be able to search by aspect ratio of images. This would be extremely useful when searching my (enormous) wallpaper collection for things that will resize correctly.
I'm not sure if it would be better to use something like: 16:10 or 4:3 for the aspect ratio, or 1.6 and 1.33. Of course, this then necessitates a bit of rounding.
It would also be nice to see the aspect ratio in the status bar at the bottom, but that's another request :)