I've never got the draw of taking a princess of the guy you're trying to over throw as your wife. It seems like if you're forcing yourself on a throne, you dont want to have someone who reminds everyone in the kingdom of the old blood. Sounds like it would be better to pursue your mortal enemy's daughter or significant woman, uniting the kingdoms, then turning on them and having twice the land and no one to rebel.
The story is still too disjointed for me to really get into it. I'm hopeful that there will be some continuity in the fantasy world, but what we really need is a continuous story in the real world. Relationships, sub-plots, anything beyond sniping at each other would be a big improvement.
I kind of want to see a paladin in the group, because what party is complete without a paladin? It may just be fact that I tend to play them, but having an amoral paladin can make for some rather amusing bits.