Document set views
Allow Views within Document Sets. Currently you don't appear to be able to add customer views inside document set folders.
Allow views to permeate the Document Set structure, for enhanced sorting.
Steven Greenhill commented
You can set the default view for a document set (i.e. the view that should be used for the documents within it). Typically, I create a new view for the list called "Document View" that shows the metadata relevant for the documents within the document set. To set the default view, go to list settings, click on the document set content type and then on "Document Set Settings". The option is near the bottom. Note that this option is only available on the list instance of a site content type (not via Site Settings - Site content types), which is logical because views are set at the list level.