i agree, i dont consider the third addition incredibly vituous.
however, from a purely education and achievement standard, beatrix did do well, all three daughters in law are very well educated and did something in their lives before they entered the royal house.
think of the poor norwegian couple: a pretty but uneducated mette-marit (the things she achieved are taking drugs and hopping at as many parties as possible, catching haakon was the best she did), ari behn is different, but i wonder how famous he'd be without the royal connection.
the danish didnt do so well: alexandra was very independent and successful in her own right, but mary...well, i wrote my share on her. same as mette, very sweet and perfect for the role (think of sweet but silly diana...), but not much behind her forhead, i suggest.
and imagine: if victoria marries her fitness trainer: good luck to the swedish reigning couple