'Britain' sounds like a ton of fun for the Western countries to figure out. I don't think many will ignore those six SCs nicely packed together!
'Brazilian' is a pirated version, also how I heard of Diplomacy for the first time. Never got to play the game myself, unfortunately it got out of print in Brazil.
'Croatia' has several variations, actually. Some, like Fred Davis, call the new Austrian home center "Zara". Others (Larry Peery comes to mind) prefer to name it "Split". Zara was the capital of Dalmatia and Split was the largest city, so as a compromise I called the place Sarajevo, the capital of Bosnia. It's a city with a lot of historical significance and the province is basically Bosnia anyway.
"Egypt" is a very interesting design; Africa effectively becomes a key area of the board like Scandinavia or the Balkans, giving Italy and Turkey an extra bit of flexibility. Should be fun!
@JECE, thanks for the tip. I will update the rules.
@Caerus, it's not up yet, no. They are all ready for play but it's better to give some space between releases so all variants can shine on the spotlight.