"CJC" wrote in message
om...

With Heathrow, my view is that the 6tph the District has free from
losing Richmond should replace the Uxbridge branch, and the Piccadilly
should be four-tracked to Heathrow, which would be quite costly, but
the inner lines should run fast in to Hammersmith, stopping at Acton
only, and the outer lines have a normal service. This would make the
airport link a lot better, the "express" stock could be changed in the
interior for more baggage space than now.

And just where on the ground would you have put the extra 2 tracks?