How about you just do it from Bradford to Manchester to avoid the complications of Leeds
Because you need 4tph Leeds-Bradford-Halifax
Post TRU
1x Leeds- Brighouse- Sowerby- Rochdale- Manchester
1x Bradford- Halifax- Hebden- Rochdale- Manchester
1x Bradford- Halifax- Huddersfield- Manchester
does/could that work ?
The first one already exists, no? You wouldn't have 6tph Halifax-Bradford but only 4tph Bradford-Leeds. Yes, I know it's technically 6tph combined with Forster Square, but that only works for end-to-end journeys.
So the three services you propose would be in addition to the current services?
I'd say: two semi-fasts per hour, with an end-to-end journey time of one hour; plus two all-stops; plus Huddersfield-Bradford and Halifax-Hull. If a stable 6tph (Leeds-)Bradford-Halifax timetable is possible, that is.