Map 3: A Late Victory
In this scenario, the war largely proceeds as it did in our timeline up until 1916 or 1917. Then, one way or another, the Central Powers do something differently and manage to bring the Entente to the negotiations table, and they end up with a deal that's more or less what Bethmann-Hollweg offered in late 1916. My idea would be that they avoid war with America, and this prompts Kerensky's Russia to make a separate peace (the lack of potential US loans removes an incentive to stay in the war). Italy is knocked out with a white peace after defeats in the Veneto, and the remaining powers agree to negotiate shortly afterwards.
Germany still managed to get its "bare minimum" (Poland, Lithuania, Courland) in the east, but this time they are hamstrung by promises regarding self-determination and the formation of national councils. Poland and Lithuania will remain intact and independent, under monarchs of their choice, though still effective satellites of the Kaiserreich and subject to economic and military control (similar to Romania under the Treaty of Bucharest, which is slightly different in this timeline as they don't get Bessarabia). Austria gains influence over Serbia, Albania and Montenegro, Bulgaria gets its share of clay, and Greece gives up Kavala in exchange for Epirus. In the west, the situation is mostly the same as in the Schlieffen scenario; key border modifications are made, but no lasting presence on the Channel can be established. Germany managed to get its African colonies back (plus the Belgian Congo), and to preserve the Ottoman Empire in its pre-war borders, but the Pacific colonies are a lost cause. Russia and Italy will both lose their monarchies and/or become fascists, and France will also go in a radical direction or at least experience instability post-war. Germany reigns supreme in Europe but her position is much more contested and Mitteleuropa will not include any of the "Latin" countries. It's significantly less than what the Germans wanted but overall they've come out in the lead.