I think you will find that when Queen St closes for platform extensions and slab track renewal that services from Edinburgh will either be diverted to terminate at Springburn or will be diverted to Glasgow Central if space can be found.
Likewise I suspect Oban/Fort William/Mallaig services will start/terminate at Dumbarton Central or Dalmuir and then will run ecs to Eastfield or turn back
Suspect Aberdeen and Inverness service to run to and from Springburn
Likewise I suspect Oban/Fort William/Mallaig services will start/terminate at Dumbarton Central or Dalmuir and then will run ecs to Eastfield or turn back
Suspect Aberdeen and Inverness service to run to and from Springburn