The results would be the ability to re-order the input controls to effect the displayed order of them when a user runs a report. Sometimes a report is created and later additional input controls are added and, from an end-users standpoint, should logically show before existing input controls (or requirements/specifications change amongst just the already existing input controls).
Ideally, you'd be able to re-order them from JSS or JRS, but even if it was only limited to one of them, it would be a big plus. The current way of having to delete them all and add them back in is painful if you are linking pre-built input controls and down right error prone if you are having to create each one with all the appropriate queries, data types, labels, etc.