"Tom Barry" wrote

Yes, it's just annoying how badly it integrates with all the lines it
crosses! You could hardly have done worse deliberately (particularly the
Northern and Piccadilly, for the way they manage to avoid interchanging
properly with both the NLL *and* the GOBLIN).

I agree that the Goblin doesn't connect well, other than at its ends and
with the Victoria at Blackhorse Road. But the NLL isn't as bad as you seem
to imply. Hackney Central/Hackney Downs are very close. At Highbury &
Islington there's a connection with the Victoria and Northern City lines,
which themselves connect with the GNML and the Piccadilly at Finsbury Park.
Camden Road is close to Camden Town, and it is impracticable to make great
improvements, though a lot could be done to improve interchange at West
Hampstead.

There does seem to be a need for a passenger service between Willesden
Junction and Ealing Broadway, as well as Slow Line platforms at Willesden
Junction.

Peter