It is true that making a Channel map over a period covering the whole of the second world war is not correct if you want to focus on realism.
From 1942, English airfields changed a lot. For example, in 1940, Manston was a field with a grass runway. Hawkinge and Detling did not have a Blister hangar ...In addition, many ALGs were built.
I know that making 2 versions of the Channel map would not be profitable for ED.