I started up a game as Scotland today and noticed that, unlike previous patches, this time I was able to stack up enough diplo rep modifiers from reform type, estates, and advisors to get a royal marriage with Burgundy on the first day.
So now Scotland has an even easier way to beat England: just sit around and wait until you get the Burgundian inheritance, after which you can easily swamp England's force limit. And you can even increase your chances of getting the inheritance by becoming HRE emperor, which is easy thanks to the fact that Austria doesn't even try to contest the election.
This is a relatively minor issue, but it highlights how all of the gradual stacking of DLC features over time leads to players now being able to do things they couldn't do before simply by pushing all the right buttons.