Specifically, I am proposing that we add
- https://moodle.org/plugins/view.php?plugin=qtype_ddmarker
- https://moodle.org/plugins/view.php?plugin=qtype_ddimageortext
- https://moodle.org/plugins/view.php?plugin=qtype_ddwtos
- https://moodle.org/plugins/view.php?plugin=qtype_gapselect (which the others rely on).
Once MDL-43952 and MDL-42409 are done, these work on phones/tablets as well as desktops.