Barlaston is a village with a population of about 3000, and Wedgwood is sited close to the Wedgwood Factory complex and visitor centre, with housing nearby. I am not necessarily advocating re-opening these 2 stations, but it is incorrect to state they "don't really serve anything.", a statement that is applicable to several of the stations on the Bedford-Bletchley line.
Fenny Stratford - ~10,000 people within 2 km
Bow Brickhill - ~4,000 within 2 km
Woburn Sands - ~9,000 within 2 km
Aspley Guise - ~5,000 within 2 km
Ridgmont - tiny population (nice station, but I don't think there's much which couldn't be moved)
Lidlington - ~1,500
Millbrook - ~4,000
Stewartby ~4,000
Kempston Hardwick - ~4,000
Bedford St. John's - ~53,000 within 2 km
So excluding Bedford St. John's and accounting for overlapping areas, around 35,000 people live within 2 km of one of the stations. I wouldn't be massively surprised if Ridgmont or Lidlington went during major works, but I wouldn't say that any of the Marston Vale stations don't rally serve anything.