UPDATE:
I tried declaring war on a german minor and calling Bohemia in so upon peace it would reset the leader. A month or two into the war the new leader (Sweden) declared the protestant league war. At first, I was excited. We absolutely crushed the catholic league, as in it wasnt even close. 5 years in we full occupy Burgundy and have 100% war score. Here my fears of an A.I. protestant leader came into play. For some reason I cannot comprehend, Swedens peace deal only forced Burgundy to release some minor nations and pay money, and the peace of Westphalia kicked in, completely ruining my objective of becoming leader of a HRE that could pass a reform. Sweden could certainly have taken protestant empire, but it did not. Why? In addition, the peace of westphalia disables the religious leagues, so I cannot start another league war or do ANYHTING to create protestant empire. I think my new goal is to just dismantle the HRE, because im tired of it not working in a logical sense.