Closing those three stations would make the CLC route fast plus plenty of frieght paths, the money saved will make the trams scheme more feasible' the stopping trains spend a lot of time in the glazebrook loop, and I have stood inside a pacer for nearly 15 mins there, stoppers and express do not seem to work at all well together on that line
Perhaps Chassen Road and Flixton could be closed, but Urmston is a fairly major station. Would you also close Trafford Park and Humphrey Park in your quest?
You could close all the halts, and just have Warrington-Birchwood-Irlam-Urmstom-Deansgate. Or indeed just shut down the stopper completely and run fast from Warrington to Oxford Road.