The versions of the OU question types in the Moodle plugins database have some issues that I believe are linked to the requirement for php 5.3 that throws errors. This may well be causing some people to take a look and deciding the quesitons are entirely broken when in fact they are just minor errors.
For example the export to xml method in ddimageortext needs the qformat type added to make it work. The github versions have the fixes and so could simply be put in the moodle database.