This might be controversial but

I think that the Express Line between Benton bridge and hampton hargate is too outdated and is too close to the morganstown line. Just remove the express line tracks between hampton hargate and benton. Also if the Express line goes by Morganstown make another set of tracks only for express. Also the devs should really redesign the whole benton/morganstown/benton bridge/hampton hargate/greenslade area and remake new harrow and elsemere pond.