It would be great if you can have an option to have the print view visible on the main screen (to the right of the design properties) at all times.
Since most people have larger screens, the right side is completely blank anyway.
See attached screen shot pdf
Yes this is a good idea and people do have much larger screens than they did when the original input screens were developed. The problem I see is that it takes some time to render those previews as evidenced by switching to them from the design screen.
If they were on the same screen as the design then everytime you hit calculate you would have to wait for the preview to render again.
I'll leave this open if this topic gets more interest we can revisit it.