Aegean is definitely a better airline than Olympic was. On the other hand, I've met people in recent years who still think that Olympic is the largest Greek airline, while Aegean is the second largest. People that aren't students of geography may have a hard time realizing where Aegean hails from, while virtually nobody can pronounce the name. Olympic, on the other hand, is a name that is immediately associated with Athens. Olympic sounds more global, while Aegean sounds more regional. OA is easier to use and remember than A3. So, for the current frequent flyer clientel, Aegean is a better name. But if they want to grow into new markets, Olympic would probably make more sense.