If one were running a desktop of 1600x1200 and were able to view the Simulator at full size whereby the screen area of the Simulator was 640x480 is would look like this. I'd be all for this as my preffered desktop resolution while using PEP is 1600x1200. Any desktop resolution below 1600x1200 doesn't allow for 4 pages at 100% zoom to fit on the screen at once without scrolling which would be a real pain. You also can't use the editor while the Simulator is running anyway (unlike PPENG), so it's not like you'd need to worry about the Simulator taking up most of the screen.