Ι want to see proper papal elections, with a College of Cardinals and the cardinal's lieges able to intervene, Cadet branches and a Orthodox lieges have something to say anout the appointment of Bishops (especially when the Emperor appoints someone as Ecumenical Patriarchal... Historically the person who would fill the office of Ecumenical Patriarch was personally selected by the Emperor)
And i can think several cool chain events for them!
And i can think several cool chain events for them!