Well anyway, tourists arriving from the West should not have reasons to try and go to Hammersmith, should they?
Why do you say that?
Certainly for places west of Reading, it is quicker to get to Ealing Broadway via Paddington than direct (can also be cheaper), so getting to Hammersmith (for example going to the Appollo) is quicker to take the H&C from Paddington.
The essential things in life are seen not with the eyes, but with the heart. --Antoine de St. Exupery