The idea of the keyboard selector is a good one but indeed it requires a visual keyboard help of some sort. The help file does not cut it. For some reason the graphic is extremely large. In the screenshot below, the size is shown for a full screen 16:9 width with the search window on the side to show how the size of fonts compare (yes the help file is set to its default size):
It might be best if a keyboard map appeared at the bottom of the search window (say bottom fourth), activated when one choose Greek or Hebrew, with a X to close it, and optionally an option in settings to have it appear at all or not.
