After reading about the dynasty thing, I had some ideas that might be fun. I was thinking every time a child is born in your bloodline, say they would have a small chance to become a channeler as well (say 1 in 10 chance). If one of your line was born a channeler it would be cool if you had the option to either promote him to a hero, or make him a vassal who pays you tribute and becomes his own nation. Maybe by becoming a vassal they go and create their own city and have a high loyalty to you, or maybe you have to gift them one of your cities.

Also, would be interesting if there was a small chance one of your bloodline becomes a rebel and takes over one of your cities. Providing some interesting RPG options on how to settle the rebellion could be pretty fun also.

Keep up the great work Stardock!