When you select your hero he could say a phrase… for example every hero shouts “aaargh” when you choose to attack an island. Some Greek quotes in such situations would give the game a more actual feeling of the ancient Greece. After all why would a hero only shout like a savage? Add random or specific Greek phrases through the game ( like age of mythology maybe ) . You can always make it possible for the users to diactivate such speeches through the option menu.
Thank you for your time !