Specution - extend Weaver line from Liverpool St to London Bridge. Divert off just before LST at the derelict land next to Shoreditch High St Station then tunnel with stations at: Liverpool St, a new station bang in the middle of the commercial district (leadenhall st?), then London Bridge
This would:
Give a direct link between the 2 of the busiest terminals (which serve opposite territories so is of relevance) - currently have to change at Bank despite proximity
Perhaps more importantly give these stations a new connection to the commercial centre of London relieving the busiest section of central & northern lines with full size trains (Bank station is also still a bit of walk from the 'city centre' where all the hi rises are)
Give the mildmay line a better connection to central London if platforms also added at Shoreditch High St
This would:
Give a direct link between the 2 of the busiest terminals (which serve opposite territories so is of relevance) - currently have to change at Bank despite proximity
Perhaps more importantly give these stations a new connection to the commercial centre of London relieving the busiest section of central & northern lines with full size trains (Bank station is also still a bit of walk from the 'city centre' where all the hi rises are)
Give the mildmay line a better connection to central London if platforms also added at Shoreditch High St