Philip
On Moderation
In order to run a reliable service across the Ordsall Chord, which isn't affected by delays in other parts of the country, could a half hourly shuttle between Victoria platform 3-6 and Oxford Road platform 1 or 3 work well, with nothing else allowed across?
It maintains the current frequency and should nearly always keep to time, but also cuts the number of services at Piccadilly 13/14. The truncated TPE services could either terminate in a Victoria through platform (or one of the eastern bays?), or divert to Piccadilly platforms 1-12, or possibly run through to Liverpool if there are spare paths on the Chat Moss.
It maintains the current frequency and should nearly always keep to time, but also cuts the number of services at Piccadilly 13/14. The truncated TPE services could either terminate in a Victoria through platform (or one of the eastern bays?), or divert to Piccadilly platforms 1-12, or possibly run through to Liverpool if there are spare paths on the Chat Moss.