Automatic introduction of backdrop manholes to limit pipe slopes/velocity in steep sites

Would it be possible for Flow to introduce backdrop manholes in order to reduce pipe slopes/flow velocity (storm and foul)? In steep sites it is often necessary to do this manually in the software and it is time consuming to optimise. It is already possible to enter the maximum velocity in design parameters and maximum slope in 'Link Types' but these don't seem to be accounted for in the auto design.