That is really a nice idea, I think my son, when he was a little younger would have loved it.
The Orientation sometimes is a little hard, so it would be nice to have at least a compass. And I am sure that most of the people (also me) can´t make out, where exact the cities in the countries are. So it would be a goal, to Detail the Main cities a bit and to name them, and also the countries.
The next step would be to land at an airport of such a city. Also to make the flight less fast, I mean adjustable.
And you have to add a sound, motor, wind, and how about the weather and influence on the airplane ?
You see I am fascinated by your work! Go ahead, I love this a tiny little world...