I have done two cruises on the Aegean Odyssey and loved the ship and the many experiences offered.
One issue I have always complained about is the large size of groups for on-shore tours. My first trip we had 38 people and not only was it almost unmanageable, but other groups come together at the same time, making it difficult to stay with the leader. I actually panicked one time surrounded by 100s of people I did not know and no sign of my group. It is also difficult to hear or to observe important sights when you are surrounded by so many people. But even the size of the Road Scholar group (which will be 35 participants when RS takes over the Aegean Odyssey) is excessive. I highly recommend that Road Scholar create more, smaller groups, with an absolute max of 25, or preferably less, to enhance participant experience.
Two other people have replied in agreement--smaller group sizes are needed. RS generally replies to these messages, but it seems it has not replied to my suggestions. Does this mean they are ignoring travelers' requests for more reasonable on-shore group excursions; or perhaps trying to work out a strategy for creating them?