Four tracking to the north - ideally up to Meadowhall - and south - all the way to Dore - should be done as a minimum. I don't think the cuttings to the north are actually as much of a problem as some seem to believe, looking at satellite maps there's only one building on the route and that's a tyre shop - from above it looks like the land was already reserved as there's a distinct line in the buildings.
A significant realignment of platforms and tracks to improve platform lengths and approach speeds could be done by getting rid of the stabling facilities. There is significant amounts of space available in Waverly and Tinsley for a proper purpose built facility - much of it on brown field land which will have no development restrictions. There are already some stabling sidings in Brightside that I've not seen used since the days of all-HST operation down to London (where they would lay over between services and wait there after coming off the depot on entry to service).
From my observations, it's feels like it's less the platform utilisation that causes issues at Sheffield but more the poor layout and approach speeds meaning services can't get to and from the platforms. 2C needs a complete rethink though (including down to the number - why is that bay a "C" platform, but the other three bays all have their own number?) - it needs to be able to take 4 car trains at a minimum.
A significant realignment of platforms and tracks to improve platform lengths and approach speeds could be done by getting rid of the stabling facilities. There is significant amounts of space available in Waverly and Tinsley for a proper purpose built facility - much of it on brown field land which will have no development restrictions. There are already some stabling sidings in Brightside that I've not seen used since the days of all-HST operation down to London (where they would lay over between services and wait there after coming off the depot on entry to service).
From my observations, it's feels like it's less the platform utilisation that causes issues at Sheffield but more the poor layout and approach speeds meaning services can't get to and from the platforms. 2C needs a complete rethink though (including down to the number - why is that bay a "C" platform, but the other three bays all have their own number?) - it needs to be able to take 4 car trains at a minimum.