Remember that ITALY was actually a member of the Central Powers in 1914. It would be interesting if the Italian player stayed Neutral for the first two turns then decided which alliance to join. Could be an interesting change up!
Of course, USA would most likely then have to join the Entente immediately following.
Interesting Historical Point: There was a secret protocol in the Central Powers Alliance, that Italy would join a war as long as it did not involve Great Britain. It was the British decision to support France that lead to Italy declaring neutrality in 1914. They only joined later to try and gain advantage over Austria and claim some disputed border territories.
