So no, I don't think a Greek conflict over "Byzantine" territories with Italy or Turkey would be completely "ahistorical".
...and I still don't understand how anyone, let alone Greece, is meant to acheive the conditions necessary for earning the Turkish Strait strat. effect! :P
Another question: Before being dragged into a war with Germany, which likewise brought in Italy and auto-aligned me (and Yugoslavia) to the Allies, I had the option of using a territorial demand wargoal on Italy, but this has since been replaced with the "Restore Democracy!" wargoal (along with the usual puppet/conquer options). Is this a deliberate effect of membership of a faction, e.g. the Allies?