Turkey could make for an interesting alternative history for the timeframe, especially if it goes Axis.
Should both the French and British Mandates be their own countries?
Not really sure. Going Fascist outright maybe. Going Axis, or even Allies? eh, not so much.
While both sides were doing business with them and both sides were giving them weapons, it was generally noted by both sides that Turkey flipping either way would be more of a benefit to other. If Turkey flipped, the other side would have to invade, because they needed to Chromium (and a couple other resources). The problem was, Turkey's military was in such bad shape that it would not last very long against Axis or Allies and would create a serious situation with, whoever got Turkey, would not have to flood the country with troops to defend it against a very aggressive enemy who could not afford to let other get all the goodies, much less get cut off themselves.
Both sides knew it, both sides knew the other side knew it, and both sides kinda let Turkey be Turkey, as long as they their half. Neither could afford opening such a broad and expansive front that would have to be nearly entirely fought with their own troops.
Even in the game, it could easily play out that way as well. It's really better for both axis, allies *and* Comintern to let Turkey be Turkey instead of fighting that war for them.
It's why i never invade Turkey as Italy. it's a nice buffer from the Allies and SU. I fight that war Im now on both their front doors. Just keep giving me my Chromium, please.
Now, going fascist and and attacking their weak neighbors as their own faction, that could interesting.