You have never been able to marry faction leaders, why would we be able to marry Rhagaea but none of the other faction leaders? Maybe when civil wars/rebellions and the kingdom system gets more worked out it might make sense if you are clan level 6 or something.This thread has informed me that I cannot marry her. Now I need to rethink my takeover strategy lol

Well... It is a virtual person, maybe?The real question is, why are you not?
Because they dont want to perhaps and want the power for themselves ? Rhagea it would actually fit in but yeah its an good questionThe real question is, why is some npcs not eligible for marriage?
The real question is, why is some npcs not eligible for marriage?
I am voting no. The whole basis for Rhagaea's power is that she's the widow of the dead emperor, running things on behalf of Arenicos's blood heir.
It makes zero sense for Rhagaea to be willing to get married, because it would jeopardize her claim to power. She might be willing to let her daughter get married, but that's a different story. She wants someone sensible to marry Ira to be a good influence.

I think this is one of those things better left to the modders. they've still yet to implement all the clan marriage features and having the player character marry into a different clan is probably not a planned feature. I personally think the game should let you marry gang leaders etc