If it were possible (if the gods/patchou wills it so) would we be able to get an auto-hide addition to the "window docking" feature, so moving your mouse to the left of the screen would make Messenger "pop out".

Even better yet, if this was added in, would be if in the middle of the left edge of the screen it came out immediately, whereas the further you got to the top and bottom of the screen the delay was greater, until right up in the top-left and bottom-left corners there would be no response at all -- this would ensure you don't accidently get the messenger window if you're trying to close a program using the top-left icon.

Thanks.

I think this is where you're looking for.