With the class 220 170 66 and cargo line vol 1 this route would have full line runs of the class 170s from Nottingham to Birmingham new street calling at derby switching ends then travelling to Birmingham calling at burton on Trent Tamworth and new street with an hourly service which calls at Willington and wilnecote with the class 220 voygers that usally do no stops to derby. Also you can finish the midland main line cargo line service into Kingsbury oil sidings and do the shunting work preparing the oil trains with also using cargo line intermodal with the birch coppice branch line You could also add a db cargo class 60 which used to work on the Kingsbury oil train
