Has anyone had good luck using the Advanced Partner Center? We are exploring with it and are finding that is give way to much information that the customer can see. Can you bring it down to nothing and then expand on it? How can you lock it down?

The Advanced Partner Center is a role, so like any other type of role, create a custom version of it and bring the access down as needed. I would not suggest bringing it down to nothing, but rather tweaking and testing in steps.