On 23 Jun 2006 02:35:31 -0700, John B wrote:

If LUL really want to goto Watford Junction, they might do better than
actually getting the Metro Line connected to the old Croxley Green
spur (the one whose rails have been lifted, but which isn't officially
closed)

The plan is to do both. However, the Croxley link is dependent on
Hertfordshire Country Council, who are arguably less PT-friendly than
TfL.
http://www.tfl.gov.uk/tube/company/p...ley-rail-link/

It's also dependent on the DfT, who are the ones holding things up at
the moment.