I would like to be able to use conditional statements in the label field of XLSform. My current use would be to change the font color of a group label based on how many or which questions in the group had been completed. (i.e. The label would start out red. Then if all required questions, but not all optional questions were answered, the label would turn yellow. Then if all questions in the group were answered, the label would turn green.)
I'm sure there are many more use cases for changing the font type and even the actual text of a label, based on the results of other parts of the survey.