1. How much overlap are people using between the pane and the opening? (eg. If the window opening is 20 inches square and the pane 21 inches square, you have an overlap of 1/2 inch on all sides) What do you think should be the minimum?
2. What angle did you use for the supports when the window is open? (Or put another way, what distance did you choose to have the supports intrude into the interior?)
3. What is the thickness of the materials you used to build the frame? What do you consider to be the minimum?
4. I would like to route a recessed area on the inside of the window to allow for the installation of a window screen. That way the pane still sits flush against the siding and it also holds the screen against the siding. I can't think of any drawback to doing that. Can you?
5. If you have a Wiley window, what would you change about it in the next build? You are still not telling yourself that this is the last build are you

Thanks for any advice or insight you have to offer.
-Ron