France also is the most intriguing Allied power to me - They’re actually still a quite powerful force in Europe and actually the narrow focus they have is appealing in a way to me. Basically France (in Europe) has to 1) hold the Western Front until a) The US arrives later to help push back or b) Germany breaks down from fighting a two-front war and France and the UK can push into Germany on their own. Then 2) Help make sure Italy doesn’t lose all of its Northern territories to Austria in turns 2-3. I know it might seem strange to get excited about a power that has mostly a containment role for a while, but maybe it’s just the thrill of trying to stop a potentially unstoppable force that is the Central Powers, before they take all of Western Europe.
Ottoman Empire again for the CP - a new power and basically one/two(if they can get into Africa) theaters of war where they are the sole power who is concentrating ALL of their forces there (Russia, UK, France, even Germany and Italy will obviously all have much more at stake in Europe).