For some reason, it went over my head that you can play solo on the 4-player version. You simply can chose to play differen't factions that were allies of Austria instead of controlling all of them. This is wonderful!
So which version of the full campaign do people play solo? The standard version, you can control all of the allies as Austria. Althought this is fun, it might force unrealistic use of allies. Playing the four player version, your allies have different agenda's and victory conditions, so they might not always cooperate. I found this quite fun playing as France, while not having to worry about controling the other allies. I had to hope they were doing well.
Which version do most like to play on solo and why? Which offers the better campaign?