I would say the Aegean brand is fresh, relevant and untainted. It's associated with high levels of service and punctuality.
Olympic was toxic towards the end and it was a good thing, after the reinvention of Airways to Airlines to Air that it was diminished. Fine around the islands and I see why A3 bought it and use it but it has no place now in the bigger scheme of things.
I also agree, anyone who doesn't know where the Aegean is won't associate Olympic with Greece either. Olympic is now only about the latest games.