I also agree that as you look at the subject more in depth it can get a little bit complicated. Also so much would change and I can see that some people would not be supportive of these changes.
For example, I'd be supportive of a monarch in a same-sex relationship. However, that does raise a question of titles. What title would you use to differentiate the sovereign from the consort?
Also a Monarch in the same sex marriage might cause a problem for the succession if they were the last of the line. However if there were other relatives around I wouldn't see it being a big problem.
Im sorry if you feel your question has been highjacked but to me it's the same question. With gender neutral succession in all hereditary European monarchies except Spain, Monaco and Liechtenstein as well as same sex marriages allowed in most of Europe the issue no longer is about women marrying into the Royal Family but how to style spouses marrying into the Royalty.
As i stated in my first response: im sure people will have no issues with the wives of princes being styled princess with her own first name. HRH princess Marie-Christine of Kent instead of HRH princess Michael of Kent. But that is only part of the issue. How should the wife or husband of a princess be styled? Or the husband of a prince?
Once you start to alter the ancient traditions you have to take into account the other variables. That might be a bit too much for some and as a result slow down changes alltogether.
Those are good examples of men given a princely title. However, the focus has shifted to men but I still want to hear how people feel about making women who marry into the Royal Family a Princess in her own right?
Hasn't this been the custom for men born royal who move to Spain, settle there permanently, and marry Spanish infantas to be created into Infantes of Spain by grace?
Also, consider Archduke Lorenz of Austria-Este, who in 1995 was declared a prince of Belgium: his father-in-law (King Albert II, then still reigning) was able to do this, for the same reason that he was able to create Jonkvrouwe Mathilde d'Udekem d'Acoz later on (in 1999) into a princess of Belgium in her own right. The 1991 constitutional amendment that changed the succession law stated that the wife of a prince was not automatically a princess. Certainly by the same logic, the husband of a princess was not automatically a prince.
http://europeanroyalhistory.wordpress.com/394