This jQuery code seems to work, when added via the admin_footer
hook.
#submitdiv
= the whole Publish metabox.misc-pub-section
= each UI section (except the Publish and Save sections)-
.hide-if-js
= the fields that are hidden by default$('#submitdiv .misc-pub-section') .has("#post-status-display, #timestamp") .find('.hide-if-js') .toggle();
That will unhide the Status dropdown and the Date picker.