Against
Even govt figures show that it does not justify the ROI
I would build every bypass, fill evey pothole, improve other train lines and then when that is done still not build it.
+1 million
I'm against, only for the quite selfish reason that its going to take so long to do. IMO money would be much better spent making existing trains more enjoyable to ride on so you dont care they take a little longer (comfier chairs, decent food, free high speed internets etc)