Is it possible to attach a set of custom fields to the Genesis CPT Archive metabox?
they have a do_action at 'genesis_cpt_archives_settings_metaboxes' under lib/classes/class-genesis-admin-cpt-archive-settings.php at line 166.
CMB2 allows for this.
My use case is to add an image field to the archive settings so that when I view the frontend to see all posts, I can use the image in conjunction with backstretch.js