Remove metaboxes from the genesis custom post type archive settings page.
Create a sidebar for a specific page with the Genesis Framework, without a new template file.
This places the post avatar in the entry header of feature posts (if you're using the grid loop plugin) and on single post pages. It also allows for co-author plus support, showing a different image when there is more than one author.
This allows you to use the built-in secondary sidebar as an alternate on one sidebar themes (you'll want to register a separate sidebar if you are using two sidebars in your theme layouts). This has a limited scope, I would recommend a plugin like Display Widgets if you are going to have a more complicated page-by-page application.
Remove category and tag taxonomies. Useful if you're not using the blog functionality of WordPress, including the taxonomies. Be sure to uncomment the other line if you're using Genesis to avoid errors.