First, I'd like to say that you have done a phenomenal job so far.

I only have one suggestion, which I don't think will be too hard at all to add in from what you already have. I use two different size monitors, a 24" running at 1920x1200 and a 20" rotated 90 degrees to give me a 1050x1680 portrait. When I use the send to next monitor Hotkeys, there is only options to keep the same window size and resize it proportionally. As I have 1 wide and 1 tall monitor, neither of these options works very well. If I don't resize I usually lose the right portion of my window when going from the 24" to the 20". If I resize proportionally then I end up with either a very skinny or very wide window depending on which monitor I am moving to. If you could put in an option to resize to screen or something to that effect, it would be fantastic. i.e. keep the window size unless it falls out of bounds of the other monitor's resolution (so an 800x600 window would remain unchanged between the two, but a 1200x800 window would be resized to 1050x800 when going from the 24" to the 20")

Thanks, I am very impressed so far. Keep up the good work.

An advancement to this could be an extra hotkey that you can set the resize ratio. I think that would do the trick for your idea as well, and would be a nice step in total customization of this unbelievable tool.