Peter Tomlin wrote:

New April timetable (3 tph from Richmond) then the line shuts
December for 16 weeks Gospel Oak to Stratford.

But the 'new April timetable' is only a peak change, and you've rather
simplified that anyway, as although it is only 3 through trains per hour
from Richmond, with additional Richmond - Willesden shuttles now and then.

The NR planner has the times loaded, eg am peak Richmond departures:
0705/25/42/49[WJ only] - 0804/25/42 - 0904/22/41/57
then the normal 4 tph as it is now, so it doesn't seem exactly life
changing...

Paul S