Splitting "heirs" 
Given the impossibility of emulating dynastic succession in the game engine, I think after all this discussion I am convinced this splitting of majors is not viable, although maybe interesting. I think we should look at the national characteristics, relations with other nations, the CB shields, fortresses, etc, and not divide Spain, France, or Poland.
Some of this will get sorted out if we look at the leader ratings. I just don't think dividing them up when they have almost no chance of union is desirable. Maybe separating Ireland from England is OK, but only if it strengthens England, not weakens it.
Given the impossibility of emulating dynastic succession in the game engine, I think after all this discussion I am convinced this splitting of majors is not viable, although maybe interesting. I think we should look at the national characteristics, relations with other nations, the CB shields, fortresses, etc, and not divide Spain, France, or Poland.
Some of this will get sorted out if we look at the leader ratings. I just don't think dividing them up when they have almost no chance of union is desirable. Maybe separating Ireland from England is OK, but only if it strengthens England, not weakens it.