Does the cross-section rule affect common perspective?

A common perspective does no such thing. It affects how life experiences are seen, not how they are evaluated. And inclusion of a cognizable group in the jury venire does not assure any particular position; it assures only that the facts will be viewed from a variety of angles. It assures that as many different life views as possible will be represented in the important decisions of the judicial process. Put more elegantly, "[T]he goal of the cross-section rule is to enhance the likelihood that the jury will be representative of significant community attitudes, not of groups per se." (Rubio v. Superior Court, supra, 24 Cal.3d at p. 98.)