I thought the new HS2-only platforms were to be to the south of the current station and almost perpendicular? The last new platform, 0, was for easier Bradford services.
Improved/easier services to Bradford was, and is reliant, on a third station being built. Out by the St. James's Market site. Further increasing the distance between stations in Bradford. The nearby, current, industrial estate is built on a former goods yard, with easy access to the current line. Rail access recently removed from this site when they replaced and upgraded the track.
The new station wouldn't be serving anywhere past there. The old trans pennine route was put out to grass many years ago, when Bradford ceased to have a one an hour service from Manchester. Bypassed further out by the loop that took trains to Leeds from Manchester and vice versa. Tunnel sealed at either end, when the current Interchange became fully operational, later filled in when the present industrial estate was built on top of it.
People wanted the two current stations moved in closer together, as they once were, when the Bradford Exchange* was in use, and when the Forster Square station was closer to the city centre. The Post Office sorting office was built as part of the then Midland Station(The Midland Hotel being the entrance), while Canal Road still has the boundary wall of the PO sorting office.
*Now the site of the Bradford Combined Court Centre, built when the city centre was redeveloped and the police station and county court were moved to seperate, purpose built buildings. The magistrates Court remained in the place it was built in the 70's.
The Bradford and Bingley Building Society offices from the same area, were moved onto the newer, much smaller bus station half of the Interchange.