The metrolink has some huge problems, including the over reliance on Cornbrook station. There was a huge failure to address that before they expanded the entire network way beyond its capabilites.
Cornbrook is a single point of failure and a major accident waiting to happen, in my opinion. But, rather than close the Station, maintain what is there and add on new platforms to deal with demand, they ignored it and just continued building new routes, whilst ignoring that bottle neck.
There's a stretch of track on the station approach, where trams are made to wait on a steep incline. At rush hour, on typically overcrowded single trams (that's a separate rant) when trams are paused at this junction, they tilt ominously. It's concerning and dangerous and metrolink continue to pretend it isn't a problem. Just like they do with everything else.