Theres no reason why current service information above and beyond the time
till the next 3 trains can't be presented on the dot matrix displays at all
stations. They've got the computer infrastructure to do it so why don't they?
Other countries can manage it.

B2003

The irony of the Met line in the Harrow are is that while down the
line at Northwick Park where there are two platforms and not much
point changing trains they have dot matrix displays showing 2 or 3
trains.
However (unless its changed in the last 6 months). Harrow on the Hill.
A big station with lots of interchanges for many services you have the
old fixed board that lights up with the destnation of the train often
5 minuites after its been announced on the P.A. and quite often just
as the train is pulling in to the station.
So you don't know how long you have to wait. Or when the train to the
destnation you want is going to arrive. And if your going into the
city its pointless having semi-fast services as a stopping service
comes in and you don't know whether when (or IF) the semi-fast service
is coming so you either let it go only to have the next train a
stopping service. Or get on the stopping service to have a semi-fast
speed past you at Northwick Park