I never really liked the 'dominion' colouration. IMO the dominions were virtually completely independent nations, even getting their own separate negotiating seats at the table after both world wars. They followed Britain's lead but that's only natural for fledgling nations. I don't think they need a special representation on a map when simply colouring them independent is just as accurate.
I've done most of Europe:
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There are obviously departures from Bruce's version, hence why I can't really say I'm mimicking it as much anymore. I guess it's rather my own spin. For example, in Bruce's version Italy was unified, but here it isn't, and Britain controlled the Flanders portion of Belgium, whereas here the 'Kingdom of Germany' (as he called it, I think 'German Empire' works just fine though) controls all of it. Likewise, Britain also puppetised Denmark and Norway and controlled Pomerania in his version, but I can't help but feel like that's extreme. Instead Britain's territorial extent in Europe is Hanover (with the Free City of Bremen contained within), Calais, Gibraltar, Minorca, Malta, and Cyprus. One thing I did keep was Russia's dominance in the Balkans. I'm also not sure what to do with Prussia. On the hand hand, integrating it into Poland-Lithuania makes sense, but on the other, I don't like how it looks aesthetically. Same conundrum with Courland.