Quote Originally Posted by Maeran
Yes, but the eldest son of the king is not always made heir by M:TW2, so it really did ruin it.
Yeah, you can't adopt anyone in MiNO because if you do he'll almost certainly be your next heir, breaking your family line.

The system in MiNO would almost work if it allowed under age family members to become heir and faction leader, however the king will often die before his grandson is 16, breaking the family line.