Destinationsky
"The back track issue does not currently have an impact on landing or departure rates with the current volumes of traffic. "
I can speak from personal experience - it does!
Not only does the gap between successive arrivals need to be extend beyond the absolute minima of 3-4 miles (minimum permitted longitudinal radar separation and wake vortex), quite frequently with RWY 20 in use a log jam occurs with pending departures at Hold B1, preventing pushbacks from some adjacent Stands and arrivals being able to taxi onto Stand.