The spouse with the more common surname should change it to the rarer surname
In the case of divorce, the spouse with the changed surname should keep the surname
Of course, people are free to do whatever they want, but this is just an idea. Because unlike the convention of always taking the husband's surname — which inevitably leads to surname extinction and a thoroughly unequal distribution of surnames — this system would by my reckoning gradually lead to a completely equal distribution of surnames.
I propose the following:
Of course, people are free to do whatever they want, but this is just an idea. Because unlike the convention of always taking the husband's surname — which inevitably leads to surname extinction and a thoroughly unequal distribution of surnames — this system would by my reckoning gradually lead to a completely equal distribution of surnames.
This done in Spain, e.g. Pablo Ruiz Picasso is called Pablo Picasso
That's related but it's not quite the same thing.