Nah. Making the northern hemisphere bigger is much more important because the reality is that most people are going to be playing nations in that part of the world.
You didn't understand. I repeat:
Europe's size (or USA's) won't even change that much. The big change would be the huge fake size of the top edge of the map, which is artificially huge in the current map in comparison to its true and real size.
It's not just about a more accurate size of countries, it's also about not making huge the northern parts of the map in which players interact less.
What's the point in making the North part of Canada, Greenland, North part of Siberia or North part of Scandinavia bigger than it is in real life in comparison to the USA, Europe, central Russia, etc? From a gameplay perspective it is better to use the Equirectangular projection map, even if you are playing Canada or Russia.