I love the discoveries, autonomy script, & the golden age the most.
I dont know about making the pope demand regions, as the pope never historically had direct control of crusader kingdoms. Maybe use the new autonomy script to make the pope demand autonomy for the holy lands (in the form of a templar or hospitaler kingdom), and only give him the power to directly demand Rome (& maybe a couple of other central italian cities).
I can't Wait for this. God/Allah/Perkun/Zeus/Atheismo/Kong bless the SS team.