Everyone has a hero, and Spener is ours.
There are only two things people need to know about him.
One - He started small devotional groups, led by laity.
Two - He brought Lutherans and non-Lutherans together through charitable projects. Maybe his pally did more of that, but Spener got that going by being open-minded. He did not want doctrine to be divisive.
That gives us unity across denominational lines and power. We own the synods, but they do not admit it.
If anyone opposes us, we scream about "Christian-bashing."