I somewhat like
Susan, though I will always prefer
Susannah. However, I take the view that a popular name doesn't become "fresh" the minute it leaves the top one hundred, because there are still countless people walking around who bear the name, albeit not as many children. But one will still hear it a lot. A name becomes fresh only when all of the people who were given the name at the height of its popularity are dead.
Example:
Heather: The name of my 42-year-old niece: Not fresh.
Hazel: The name of my dead grandmother who would be 110 years old if she were alive: Fresh.
Lots and lots of women named
Susan still walking around. Not fresh.
I find
Frederica very harsh. I pronounce it Fred-reek-a, three syllables.