PSA: Marriage Rights for Nobility actually does something
The tooltip for the Royal Marriage Rights privilege only says "+5% Cabinet Efficiency", when it also prevents a -10 legitimacy hit every time your ruler or their immediate family marries a noble. I wish I knew this the many times I was trying to put my nobles in their place by revoking all their dumb stuff. Mid to late game getting that 10 legitimacy back effectively costs hundreds of Dukats.
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