The following modules currently have an archive function:

mod/assign

mod/certificate

mod/facetoface

mod/feedback

mod/forum

mod/quiz

mod/scorm

Apart from facetoface they are all Moodle modules and we're always wary of changing the functionality in Moodle code as it makes it much more difficult to maintain and merge in every Moodle release. If there was overwhelming demand for a change we would prefer to try to get a change submitted to Moodle rather than having a separate Totara fix.