Yeah that's what I figured. The only way I could see it sticking would be for England to keep up the alliance with Burgundy and an independent Brittany as counters to French expansionism.
How much was the Hundred Years War a part of France moving from a feudalistic to more centralised state? If there's no Hundred Years War France might take longer to centralise although this is offset by their not being as ravaged as much. Other than Burgundy and Brittany are there any other areas of France that England could try and break off and support as independent entities or were already independent to help counter France?