So, I just started my first game inside the HRE. I played as the habsburgs and created the Kingdom of Burgundy and am now slowly eating into germany and Italy.
When my less-than-competent heir inherited I noticed one thing:
My vassals wont revolt, however much they hate me. That made me start thinking: Why should I ever become emperor or independant?
The only thing I need to do is keep sort of a puppet Emperor on the throne and keep the Crown authority on Medium. As the most powerful ruler inside the realm it should be possible. Is there anything I am missing?