Add New and Remove Destination

The ability to add a destination user to an existing active client event OR remove a destination user. It would be nice to have this as an event in a SmartObject so we could do this from a SmartForm and or the Management Task list tab. I can redirect but in some cases I have users that are not in Active Directory any longer and need to remove them because the workflow fails. I know you might say we can do a Share but there are specific instances where this does not apply. If your workflow is in the middle of a split and your redirect and active client task - it will cause the workflow to FAIL / EXPIRE at the merge point of the workflow path. Hence a redirect does not work.