If there were sufficient funds (unlikely), would be technically feasible to move the actual junction (points) northwards to somewhere near the old Golborne South station ? The current points would be removed, the DF & UF lines would become Up & Down "Manchester" lines, whilst the current US & DS lines would become "fast" lines as far as a new high speed junction a mile or so north of the present Golborne Junction.
I think the problem is that the operators don't really know what they want in the longer term.
Golborne Jn is optimised for the WCML fast lines at the moment, and that is still the route with high expected growth (intermodal freight mainly).
The slow lines are currently overkill for the traffic, and the infrastructure at Springs Branch (6 tracks, underpass etc) is insanely over capacity.
On the other hand if new freight terminals come on line at Port Salford and Parkside, plus expansion at Liverpool, Golborne Jn could be a significant bottleneck.
The passenger need is only going to be 1tph initially (Manchester-Scotland) and possibly 2tph while the Bolton route is electrified.
Then there are the HS2 connections, wherever they might be (we'll soon know).
Maybe the old GC route Glazebrook-Culcheth-Ince will come back to life.
Very difficult to decide what to do in the short term.
And all this because the North Union promoters in the 1830s couldn't see 180 years ahead!