Is there any mod, standalone or incorporated into an overhaul, that would make royal lineage matter more ? Atm the trait "of x faction's blood" doesnt add much gameplay, though it adds roleplay value i guess.

Something like a trait for members NOT part of the royal lineage, which would drastically decrease their loyalty ? or authority if leader
Or some faction wide BIG malus (temporary or not) for when a non royal family member gets to the throne or becomes faction heir ? I dont know if factionwide effects are possible in medieval engine tho