This thread is for developing the TL that I've already mentioned in the context of its maps. I suppose that some of you might class it as a 'Britwank', especially if you consider the OTL British Empire to have pushed the limits of plausibility anyway, but I don't think that it's really too extreme. The basic idea is that with a change of leadership [from the OTL situation] in Britain the British government and the discontented Americans manage to compromise on something along the lines of 'Dominion' status for the collected colonies -- with both nations' governments also represented in an 'Imperial Council' that constitutionally has potential for expansion to include people from other parts of the Empire too -- at some date in the late 1760s/early 1770s, thus averting the AWI, and that these changes give the Empire just enough of an added edge to help it become even stronger (but yet more stable, too) than IOTL.
The main map that I've been working on, which I'll post fairly soon although there are still few areas that I'd like to fix first (ownership & boundaries of some African colonial boundaries, extent of revolutions in Russia, control over parts of China), is for the year 1912 and will show the situation following the end of a 'Six Years War' -- also called 'the Great War' -- in which the Empire and its allies defeated what was essentially a Franco-Spanish-Prussian-Russian Axis.
The main POD is that King George II is wounded while commanding his army (as the last British monarch IOTL to command an army in the field, at least so far) and that some lingering after-effect from this finally kills him off seven years later which means that his eldest son Frederick, the Prince of Wales, succeeds to the throne. This averts whatever (by some reports an injury from either a cricket ball or a 'real tennis' ball) caused the illness that would have killed "poor Fred" in 1751 if things had still gone as IOTL. With the Guelph family tradition for alternating generations switching their support between political parties (mostly to annoy their fathers) he gets on a lot better with William Pitt [the Elder] than George II would have liked or than OTL George III did when the American crisis arose... and there's even a little bit of historical evidence to suggest that Frederick might actually have been slightly more "reasonable" politically himself anyway than were either his father or his son, too.
Unless people here are too strongly opposed to the idea of TLs having more than one [unrelated] POD there will have already been another and more minor minor change from OTL roughly a century before this, when Britain's newly-acquired lands around New Amsterdam -- as New York was called in those days -- were divided into a number of colonies. I originally decided to write this into TL in order to make placing the Kingdom of America's capital city on the map a bit easier, but having thought further about the matter it would also provide a minor butterfly to help get New York to accept having that city ('Kingston', which is basically located as per OTL Brooklyn) removed from its own jurisdiction when dominion status is being agreed. I don't see any other & more important butterflies necessarily being bred from this POD, so I don't see either its inclusion in the TL or its omission instead as very important: What do you say about it?