Well, I had a few extra PoDs in store for my ATL. First, Basil II has a son (Romanos I think) and successor as able-minded as he was around 1005. The Macedonian Dynasty remains at it's height under his stabilizing rule, and easily undergoes the Great Schism, almost identical to OTL. Second, Toghrul beg and his brother die besieging the city of Merv in 1029, thus butterflying away the Great Seljuq Empire. So there's no takeover of the Middle East, or a Battle of Manzikert in 1071. Third, I'm going to see if Henry IV, instead of being captured by the Archbishop of Cologne in 1061, escapes to Italy where he's captured by an Sicilian Emirate Fleet, which brings him to Cairo where he's held hostage by the Caliph, whilst studying the benefits of the Islamic world, and whilst staying a Christian, yet reformed. His changed personality and attitude towards the 'infidel' would surely make him condemn the Norman invasion of Sicily, and would surely ally himself with the Byzantine Empire. After returning to Germany and being crowned Emperor, he then begins his (ITTL much more radical) Investiture Controversy that screams heresy in so many ways it baffles everyone but Constantinople. Before he's excommunicated by the Pope, Henry manages to invite his German adversaries to a banquet in 1077 claiming to make a compromise, and orders his guards to slit their throats while drunk and puts all their heads on pikes branding them traitors to the Empire and supporters of papal tyranny. His remaining subjects have no choice but to obey his will as he proceeds to invade Northern Italy against the Papacy, while the Byzantines simultaneously invade Southern Italy against the Normans. In 1080, Henry IV manages to capture Rome and the Vatican and proceeds to slay the Pope and instead of electing a new Pope, abolishes the title altogether, destroying the Papacy forever! He then splits the Norman holdings with the HRE taking back Sicily, Capua, and Benevento while Byzantines taking back Amalfi, Salerno, Calabria, and Apulia. Finally, he proclaims a new church for the Holy Roman Empire and it's vassals; The Teutonic Protestant Church, led by the Emperor and his Patriarch of Cologne! Catholicism begins it's decline and dismemberment, and my first part of my radical medieval Europe and Asia is complete!
Does this seem like a logical idea?