How is the number of family members handled? Do adoption opportunities and births become less frequent if you do not keep gobbling up territories? I read somewhere before that the size of your family was roughly proportional to the size of your empire and that seemed to be true, but now I am not so sure for EB. Maybe the size of your family is only limited by how fertile your family is? Could someone clear this up for me, please.

Unrest...is there anyway to affect it? I know that family members have certain traits that directly change a settlement's unrest...but buildings have no affect on unrest, correct? What are all the factors that contribute to unrest?