For every area of value there is a equal and opposite area of negative value that mimics true authentic value. And this birur [separation of good from evil]] is hard to accomplish. It is hard to tell the difference between true holiness and what mimics it. So by following the path of the Gra this "birur" is accomplished by simple faith in the wise with needing to go through the difficult process of figuring it out on ones own efforts.
I am referring to the signature of the Gra on the letter of "Herem". But the issue is not just that the herem has legal validity. It is that it represents an objective reality.
For no one claims the Gra had everything. Rather every person is usually connected to some area of value. No one thinks the Gra could have written Mozart's Jupiter Symphony, or write the Constitution of the USA. Rather there are people that have a connection with a certain area of value, and a lot of the effort that they need to expend and others is to determine what is the real thing and what is fake. Or sometimes there is a penumbra of positive value area around the center of value that is not evil, but just not as close to the real truth as the center of value.
It is easy to see how it fit into Kelley Ross's theory of value --see "Kant Fries School", but also this can be understood along teh lines of Hegel. [Though to see this in Hegel takes a lot more work. See Cunningham of Hegel who sees the importance of McTaggart, but also sees how McTaggart missed this part of Hegel.
[Hegel believed in the One true God of Israel and also recognized this process of birur.]
So what ought to be done is to make batei midrash on the name of the Gra. The benefit would be great for those that earn Torah and those that don't. For those that don't the benefit is to know what authentic Torah is even if they find it hard to keep it For those that learn the benefit is all the greater in that just by invoking the name of the Gra, the temptation to look at torah of the dark side is diminished
