Congratulations to Michael and Diana Bijon, who got the ACLU's help in overturning the California law barring men from taking their wives' names when they marry. From older news coverage, I recall that Michael had a bad relationship with his father, and was very close to his wife's family, and thus wanted to take her name. I don't know exactly what we should call his old name now -- "maiden name" isn't appropriate. Bachelor name, I suppose?
My preference is for both spouses to keep their names, and to invent clever name fusions for their offspring. So if I were to marry a woman named, say, Von Argebargebruger, the kids would be Sinhabargebrugers or Von Sinhas or Argebargebabus or something, depending on how many extra syllables of adversity we wanted them to overcome.
Philosophers Steven Yablo and Sally Haslanger call their clan the 'Yablangers', which always sounded kind of nifty to me. Definitely for academics and other people whose names show up in bibliographies, having people retain their names seems the way to go. You don't want people thinking, "Whatever happened to that book that Von Argebargebruger said she was going to write?" or "Why didn't Baroness Sinhababu publish anything until she got tenure?"