Spot on Valvegear, AND it would be long overdue.
It should also be an opportunity for the network operators to proclaim certain fixes would be achieved with government action on xyz bottlenecks, dilemmas etc wherever these may be.
It's ok for Joe public to throw ie Metro under the bus for xyz, but IF it's because the government hasn't upgraded ie signalling to allow for Metro to run more trains per hour as the solution, then that's the root cause and needs to be highlighted as such.
To be fair, this has to be part of the discussions, and blame has to be accurately apportioned.
I'd like to see problems itemised, the party(s) to fix it identified, and a cost and timeline associated with each.
But hey, if any party isn't doing their bit now as a solution to something - a whack should be forthcoming.