I'm just going to throw out there my distress at the Kremlin being the Order wonder. It was built ages ago, and only put its modern form under the Russian Empire, whose great ideological slogan for a time was "Orthodoxy, Autocracy, Nationality. See: http://en.m.wikipedia.org/wiki/Orthodoxy,_Autocracy,_and_Nationality
Therefore, it is strongly arguable that the Moscow Kremlin was built under an autocracy.
The Moscow Kremlin (btw, кремль is pretty close to the unique building Крепость - one is basically "Castle," the other "Fort") in time did become a quintessential emblem of Communist rule. However, the idea that Order must precede the Kremlin is ahistorical and a little silly. The Motherland Calls would have been a much better Order wonder.
You can minimally rationalize the Kremlin b/c the famous mausoleum complex on its outer walls (partially seen in the intro video clips) was a total USSR thing. Still, at least China, Mongolia, Vietnam and North Korea also did communist mausoleums, so making this a unique wonder isn't ideal.
I'll still buy the game, but I'll be grimacing when I see order civs build the Kremlin.
As long as Big Ben is still the same, the Kremlin is not going to be the most ahistorical wonder in Civ5.