Very nice idea!
As a suggestion for the real map, draw the road more like a diagonal, so you can make it a bit longer.
Unless you want the minimap to looks like "Gold Beach classic"
Once I tryed to make a map like that for fh1, the only difference is that the map would be based on "the island". The idea was that the allies would be able to see Arnhem bridge itself when they were attacking the last positions, heavy defended, they would conclude that it is a bridge too far.