Etretat is next to Fecamp. I liked Fecamp a little better. Etretat has some prettier cliff features and a casino. Fecamp is more of a small port town with nice cliffs, not as dressed up for tourists. Along the top of the cliffs above both towns are walking trails with lots of intact German defenses and cliff views.
My favorite thing in Bayeux is the tapestry. It was on loan to England for awhile. I'm not sure if it's back now?
I love Mt. St. Michel. Like any very touristy sight, it's best to see it early or late.
Quimper. I skipped Quimper because it seemed to be a larger, more industrial port. I liked Locronan. It's an inland town that is used as the backdrop for various films and TV shows. Concarneau, Lorient, Pont Aven, Auray and Vannes are various size port towns on the south coast. I used Vannes for a base but loved the smaller Auray.
I like Dinan. It has a nice port area down on the river and a nice medieval center up the hill. I think it gets filled with tourists in the summer too. I was there in mid September and it was really nice.
St. Malo is nice for the wall, small sandy beach and walking out to the fortified islands at low tide. There's a museum there but I didn't visit. The town inside the walls is mostly tourist geared shops, eateries and inns. I'd try to visit at low tide and take advantage of the walk, then walk the ramparts (go to Cancale for dinner).
Cancale, not far from St. Malo is reputed to have the best oysters in the world. I was skeptical when I visited but came away thinking they really are the best.
There is a nice castle on the north that's worth a visit, Ft. La Latte. It's been used in various capacities over the years but retains its medieval charm. You can climb literally to the top and take in the views of the sea and cliffs. It's not too far from Dinan and about the same from St. Malo.