So many questions, in an ideal world the One League system is the way to go but it will have a dramatic effect on the way it operates with costs etc.
No way will the likes of Kurtz , Bewley , Fricke , Doyle etc be able to ride in such a League even the so called lesser riders like Masters, Lawson, Harris (Heat leaders in both leagues) prefer and demand to ride in two British league sides to make a living.
Its a complicated and sad way the British Leagues have evolved.