Back to Boston. I am all for the North-South Rail Link. When the big dig was done, there was a provision made for two railroad tracks there, correct? The problem is both ends, especially on the South Station side. How do you access the thing from a track or two at South Station. A civil engineer would have a field day with it, I think!
The plan under discussion here involves a change of directions to get to Maine, although, once again, the tracks are in place, using the Grand Junction and the wye behind the Boston Engine Terminal to get to the MBTA Haverhill Line and then on to Maine from there. I hate changing directions when on a train [as you might have guessed] and that's what the Ameristar plan proposes in Boston. There exist a couple of potential ways to handle an Amtrak Regional train up to Maine. But right now, absent the North-South Rail Link, using the Boston and Albany to the Grand Jct seems to be the only way. Or the former State of Maine route, and it doesn't have to be on an overnight schedule, IMO.