I would like to suggest a route for the SE london commuter belt. This would include services from Charing Cross, Cannon Street, Blackfriers & Victoria coveting may be the 3 or 4 route variants out to Dartford & gravesend. This could knit nicely to SEHS at Ebbdfleet & gravesend
Been suggested before, but you'd be looking at two or three different in game routes in essence Victoria to Chatham via Bromley South is Chatham Mainline Victoria to Dartford via Nunhead and Lewisham is South London Lines Charing X, Blackfriars and Cannon Street all go through London Bridge and onto the North Kent lines They could also do the Kent Mainline from Charing X, Blackfriars and Cannon Street to Sevenoaks or Tonbridge, especially as this would give a greater range of freight services coming up from Ashford and Tonbridge to Bickley and Petts Wood