When preparing a document for the purposes of a Q&A, you normally want to be sure that all the datafields are empty (i.e. not activated). Currently, there is no outright possibility in the assemble document mode or in the Q&A mode to check whether this is actually the case. Therefore, a simple indicator would be helpful.
OK - have to take back the suggestion, as there is “show data fields without value” option, which allows to see whether there are any data fields with value.