Matter of fact, my TL Blut and Water has this so far minus Italy and the US (war just started).
Here is a little sample:
Nov. 30, 1899 Joseph Chamberlain says "friendship" rather than "alliance" in front of Wilhelm II and Bernhard von Bulow. During the Second Boer War, their is no boarding and searching of German ships near South Africa, avoiding the embarrassing seizure of three German mail ships in Jan. 1900, not giving Admiral Tirpitz public outrage meaning the Second Naval Law passes in a severely weakened state and no further ones are passed, avoiding the naval arms race.
By 1905 there is a variety of agreements between the UK and Germany with respect to spheres of influence and colonial cooperation. For example, the Cape to Cairo Railway is successful built. There is no UK-France or UK-Russia ententes, leading to friction between their spheres of influence, particularly Africa and Asia, respectfully.
In 1912, during the *Second Balkan War, Bulgaria successfully seizes Constantinople, and Russia and Rumania declare war on the Balkan League, siding with the Ottomans. A-H declares war on Russia & Rumania when Bulgaria's king is killed by Rumanian troops, Germany follows suit, France invades Germany through Belgium and so it goes...
Actually this thread has given me an idea of how to get the US involved, but getting them involved directly in continental Europe is unlikely.