Business users shouldn't access all of the analyses in Presentation Services. We should set the permissions of the catalog objects so that users can only access the analyses that they need from a business perspective. We can enforce security settings in the repository and also in the Presentation Catalog.
Besides security, query performance is another issue in the BI projects. Whenever analyses run, they should display the results quickly. For instance, generating one result set in an hour is not acceptable. We should tune the performance in such cases to satisfy the business goals.