I'm actually going to admit that, IMHO, the lines that should be getting the most focus are the various East Coast to Chicago lines. Now, that includes NY-Albany and Philly-Pittsburgh (and, frankly, I do wonder at the prospects of Boston-Albany). The reason is that whatever you can get in corridor lines, you can also beef up the Chicago-bound long distance lines.
The second (and less likely) area for improvement is the DC-Miami line (focus on DC-North Carolina for now)...the problem is that a lot of those states are highly Republican (the only Democrat on the line is in North Carolina, but Virginia is also receptive to rail projects...our Republicans are a little different than the national brand). Again, you get two benefits for one, and in these cases, I know the Silvers (and the Palmetto) are a relatively good investment for improving times on.
The second (and less likely) area for improvement is the DC-Miami line (focus on DC-North Carolina for now)...the problem is that a lot of those states are highly Republican (the only Democrat on the line is in North Carolina, but Virginia is also receptive to rail projects...our Republicans are a little different than the national brand). Again, you get two benefits for one, and in these cases, I know the Silvers (and the Palmetto) are a relatively good investment for improving times on.