Good luck. Steeton & Silsden has 648,000 journeys a year and Northern are showing no signs of putting in a ticket office there (though we did get a card-only ticket machine recently).
You're right. Northern don't want to open new ticket offices or extend the hours or staffing levels at existing ticket offices. However, the station in question has a closed ticket office and someone who was willing to volunteer to operate it.
However, I can see Northern's argument for Steeton and Silsden.
1. It's the first/last station in the Metro area (at least it was for the most recent stats.) This means a lot of people with Metro tickets will buy additional tickets to and from this station without boarding or alighting there.
2. More passengers would likely want a Metro ticket, available from a range of outlets, over a NR ticket.
3. There seem to be no station buildings to renovate and reopen as a ticket office meaning the cost is much higher than at most stations.