I came across WW Scion. Has anyone played this? Is it like Awnsheghlien/Ehrsheghlien/Scions in Birthright in terms of the advancement of divine abilities. Is there a power over mortals that resembles regency?

I also found WW's Dark Ages: Right of Princes that talks of "building and keepng a demesne". Is this any help on managing holdings/getting domain-level plot ideas?