That would be cool, but maybe for the next game in the series, or a patch after they tighten up the way this works now. The current family tree is totally whacked. I can't make any sense out of it. Right now in my campaign I have a faction leader who is the son of a living father, and his brother (not the oldest brother) is the faction heir. Beats me how this works. I'd like to have the current system be more predictable before we mess with inheriting across diplomatic marriages, etc.

I do think it's a great idea, btw... just bitching about not understanding how the current system works!