I think Maureen McGovern bowing last is completely appropriate when you consider the fact that if Ms. McGovern had opted not to tour, there would probably not even be a tour of Little Women. She is the reason that show got on the road, there is no doubt in my mind.
As far as Marc Jacoby being listed, he is more or less a theatre "name" having been in the industry far longer than Manoel Felciano or Gemingiani (typo?) and I believe deserves where he is billed as well as his bow. When you recognize a performer you are not only recognizing him for his performance but, I believe, also for what he or she has already accomplished in some cases. Jacoby has originated roles on Broadway and on tour and deserves where he is.
I think that Norbert not getting the final bow is very odd. It's remarkable really but it may have been his choice.
BSoBW2: I punched Sondheim in the face after I saw Wicked and said, "Why couldn't you write like that!?"