Dave Arquati wrote:
On the other hand, a Bakerloo extension would probably lead to increased
overcrowding on the Northern line north of the Elephant, as people make
new journeys or switch from buses and trains to the Tube for journeys to
the City.

It all depends on where most of the passengers would go. I think
extending the Bakerloo to Herne Hill and constructing a flying terminus
there would be an excellent idea, if and only if it could be shown that
most of the paseengers at Herne Hill are headed somewhere served by the
Bakerloo Line.

As for the DLR Dagenham branch, it makes sense to build it because it
provides direct one-change access to and from Docklands from Essex.
People living in Beckton can now commute to Shoeburyness, and people
living in Dagenham have more access to Canary Wharf. Everybody wins,
especially the District Line.