I'd like a faster and easier way of toggling the full screen mode. The F11 button is a pain to reach in the dark on my keyboard (microsoft natural ergonomic keyboard) and I do most of my scrolling through the pictures with the mouse wheel so a key press isn't any faster than a mouse action. Perhaps double clicking on the picture area like in most video viewers, or clicking the mouse wheel like in acdsee could toggle the full screen mode?
Speaking of acdsee, I'd like fpv to be able to adapt the window surface size to the picture like acdsee can do. It's really practical when viewing pictures that are a mix between portrait and landscape without wasting unnecessary screen space, or when the pictures are smaller than the screen resolution.