The topology of this planet is not suitable for longitudinally large countries. That's unfixable. What is actually a bigger problem for me personally could be solved - seasons. I have to carry two sets of clothes (warm and light) in my luggage and there isn't even a changing room at the airport. It happened to me once that I travelled home in London from the airport in the winter in a light summer dress. A few big booms under the surface and the Earth's rotation axis would straighten up - as it should be.