Aspect Ratio for the fancy imshow, need your opinions!

Currently, the simple imshow(), just shows the image at its native size with no resizing possible. In the QT plugin version imshow(img, fancy=True), allows the image to be resized with the window to any aspect ratio. What is the preference of everyone here? Would you rather I leave it so it can be resized to any ratio (with the possibility of it not being the correct aspect ratio on launch, if it is very small, or very large). Or would you prefer that the aspect ratio be kept constant? Cheers, Chris