Metro to the Metro

Right, here we go, one of my first proposals/rants on the way the metro should be.
When I first moved to Newcastle and discovered the metro network I was quite shocked to find that there was no metro to the Metro Centre- the largest shopping center in the EU, located around three miles west of Gateshead/Newcastle city center.

Despite its proximity to the town the Metro at current is almost a different world. Bus links to Newcastle take quite a while and the train service (Yes! There is a Metro train station whose line runs to Newcastle! Not many people know this) is poorly advertised and badly run.

So. Why the hell isn't there a metro to the Metro?
As I've said a railway line already exists. Its the current Newcastle-Carlisle line (the old one north of the Tyne having been long since removed). This line is quite heavily used by freight but for local passengers its nothing.

We need a metro to the Metro!