I just finished a game as Greater New England (started as New England, annexed New York state from America and formed Greater in 1855 or so after a 5 year war).
North America borders:
Europe:
Pops:
Final ledger screen:
My only regret is not having enough time to take New Mexico (I stopped taking land from the USA in the 1880s and only started again in the 1920s so I had more room to put factories and for craftsmen to emigrate to, so I didn't have time to annex all of it or make the border pretty).
I've only mobilized once this game, in the first war with the USA. All other wars have been done purely with professional soldiers.
I fought in 2 of the 3 Great Wars and won both of them, both times the wars being New England/Germany v. the UK, France, Russia, Italy, and Scandinavia (and a few other minor powers).
Fascism was hilariously prevalent in this game, with almost all of Europe and the Americas being fascist at one point, around 1920 - 5 of the 8 great powers were fascist, including Greater New England.
As an amusing note, directly after I won my first war with the United Kingdom - in which I annexed Nova Scotia - I formed a division, the Fifth, and nicknamed it 'Crumpets,' since it had several Anglo-Canadian brigades. At the start of the Third Great War, I loaded a random division (I wasn't paying attention to which one it was when I loaded it on) and realized only when they were landing in Inverness that it was the Anglo-Canadian division Crumpets, which turned out to be the first ever New English force to land in the British Isles, which I felt was ironic and amusing.
They also fought in the Battle of Inverness, the most bloody battle of the Third Great War, and sustained 66% casualties in what was ultimately a New English victory - while they were occupying Inverness, a British force attacked them, followed by two more British armies (totaling 160,000 men against the poor 30,000 man Crumpets). I rushed two more divisions to help out, and New English forces ultimately won - suffering 25,000 casualties, of which 20,000 were from the Crumpet division, and also killed the entirety of the British army (160,000 men). Crumpets die - but they do not surrender!