As the title implies, this is a request actually.
I am working on a project that uses this plugin and I want to be able to add a new option for a custom field group, which contains a bunch of checkboxes, when editing a post (sort of like the "+ Add New Category" feature for the built in "Categories" meta box).
Upon inspecting the source code I have noticed that there is a "do_action( 'wpcf_fields_' . $field_slug . '_meta_box_form', $field );" hook.
Besides the obvious fact that this doesn't actually deal with the content of "group_output" variable it can however be used to output custom content but only before the plugin's content (just before the <div id="wpcf-group-metabox-id-..">..</div> node).
My problem is that I want to output content after that <div id="wpcf-group-metabox-id-.."> node which is not possible without a filter hook.
Is there any possibility that such a filter can make its way into the plugin source code for the next release and when would that be?