This is just an idea that may be beneficial for the app itself,
I thought that if you finish off the London region with the east cost (EGSH - Norwich area) and around there, you might be able to add graphics to the end of England and possibly add sea ultimately joining the London and Nederlands regions together with a few changes that are very possible to do. I believe this would be great for Infinite Flight offering a more realistic simulation being able to fly between countries (England and Nederlands). If imthis is successful it may result to more regions being linked.
Just an idea :))