16th street Junction on Septa's "Main Line" is an extremly important part of the RRD. With that said, I dont think that the CHW trains being routed onto the Reading side is a bad idea at all. It would be faster then negotiating the slow speeds of North Philly station, Lehigh interlocking and assoicaited slow speeds with coming and going.16th street Junction has been rebuilt during Railworks although almost to the same footprints and is fairly reliable but,,,,Oh I remember many a Friday Pm rush hours being screwed up because the RROC lost all control of 16th street or Wayne and service would be screwed royally.There is 1 PM dispatcher who works desk 3 that controls that area who will use this interlocking to its advantage and will cross many trains here just to keep them moving such as trains going to CHE will cross over to 3 or 4 instead of at Wayne because by the time it got to Wayne, there could be a conflicting move. In my opinion, He's probably the best dispatcher Septa has and good thing is, He doesnt use the autorouter.....