We have some workflows that seem to get stuck as "Waiting" but then never move forward.  While we are trying to determine what is causing this, we've found some functionality that would be very useful in adding to Workflow.  We'd like a way to have Workflow send a notification if a workflow has been running for more than a specified time (e.g. 24 hours) and a way to have it be automatically terminated if having run for more than a specified period of time (e.g. 24 hours).  I know we can put the deadline activity in the Workflow to do these but as the Workflow is stuck, that activity never runs.  We need this capability provided by the Workflow or Subscriber service in the same manner as we can choose which workflows to run in single instance mode.  As a work-around I am querying the Workflow SQL tables directly but would like to see this functionality built into Workflow.  Has anyone found a better way to manage "stuck" workflows?