The principle of allowing various interests an effective veto is the basis for John C. Calhoun’s theory, expressed in this essay A Disquisition on Government. The principle is very interesting, and is an almost sure way to prevent one faction from ruling over everyone else. As Calhoun wrote, it also forces disparate interests to compromise, which makes for a more reasonable and moderate regime. He gave historical examples, some quite interesting.
There can be very little harm in the monarch’s veto of abortion. It does not hurt anyone to protect the unborn, after all. It is easy to tell which is the totalitarian side in this controversy. A strong hint is that the side which wishes mass death is probably not benign.
Well, I am, quite simple, a monarchist, so you don’t have to convince me. The royal veto, provided the monarch is himself legitimate, is a necessary element of government, which cannot be replaced by a constitution, no matter how well written. I am all for the democratic process, but in a consultative role.