Ehh, there are reasonable arguments against doing the NS connect. I'm pretty tired of hearing about it at this point.The talk about a double track link between North and South Stations keeps going on and on. Call it a highway, aka "Big Dig" and it will get done.
Lets get the entire network electrfied first - thats a prerequisite for any $10B train tunnel underneath the city. If we get that done, I'll start to consider the it.