Demolish the Arena is sadly the starting price for all that, or rebuilding all the structures westward from Victoria to about the site of Deal St. Box (it is a mugger's buddle of odd decks, arches, side spans and holes). Unless it turns out that the entire GDP of the North is being strangled by capacity through Victoria I doubt the funds will never appear to do either.
I wasn't supporting perpetual five-car, BTW, just missed a, a
or possibly a
.
What about building over the gap in viaducts at the end of Mirabel Street, building two west terminating platforms there, replacing both footbridges to extend platforms 3-6 by 15m at each end and build an entrance and exit at the end of Hunts Bank? Would that be viable on a sensible budget if the new capacity at Stalybridge and Rochdale proves insufficient?