Funny I saw this as 1000 BC and thought "Well that's not too hard" - before Linear B was deciphered nobody knew they spoke Greek anwyay! And if the Luwians (as we now call them) had prevailed and come Westward then Greek would have been the losing language. Then you have the whole invasion thing where the invaders adopted Greek.
But as asked 1000AD - well it could have been completely Romanised. It was only cos the Romans valiued Greek heritage that it had a different trajectory than Carthage or Gaul or Iberia. Full Romanification would render Greek a dying secondary language
But as asked 1000AD - well it could have been completely Romanised. It was only cos the Romans valiued Greek heritage that it had a different trajectory than Carthage or Gaul or Iberia. Full Romanification would render Greek a dying secondary language