Having said that, I want to help with Islamic reform. If we decide to divide the Sunna into good Sunna and bad Sunna, how do we do it? We need a rational method, not whim, taste or like/dislike.
If we take an overview of the Trilogy, we find two organizing principles—submission and duality. The Koran is a text devoted to submission and duality. Submission is straightforward enough, but duality is not as familiar. Part of the Koran's dual nature is seen in the Meccan Koran and the Medinan Koran. They contain contradictory principles.
The Koran gives a method to resolve the contradictions—abrogation. But since every word in the Koran is from the perfect god, both sides of the contradiction are true. It is just that the later verse is better than the earlier verse, but the earlier verse is still true.
This establishes an Islamic dualistic logic, which can accept both sides of a contradiction as being true.