Hello

I was thinking of the change of the Spanish succession law, and came up with the idea of the tremendous injustice that it would be if such a change was to be retroactive if a son is born to the Princes before the modification...
A) The succession lies in the King's children: King Juan Carlos has two elder daughters and one son, they have also children of their own
B) The current law prefers males to females
C) The Succession is to be changed to give females the same right as males
D) If a son is born before the change and he looses his right to his elder sister, then...
E) Prince Felipe, on the grounds of retroactivity and justice, should loose is title of Prince of Asturias, which sould pass to:
F) his sister Infanta Doña Elena, and if she doesn´t want it, to her children, or to her her sister and nephews...
It seems much more logic to me...I have nothing against femals on the throne, actually they seem to be very good rulers...but in peaceful times no royal should loose a right that he has born with...
These are just conjectures...Nothing might happen...No son may be born...
I'm just asking if is it the idea of sexual equality behind this story...or just the beautiful baby's?
Thank you.
Bernardino