If the New Haven RR had been able to do that sort of systematic curve reduction back in the early 20th century, we'd certainly have a faster Shore Line today, but as Mr. Norman points out in the current economic and political climate the chance of any significant right-of-way relocation in populated areas is nil. Even if the money was available, the people whose property was being taken would be able to tie it up in court forever. If you want an example of what rich NIMBYs are capable of, read up on the Cape Wind offshore wind power project, which is now well into its second decade of obstructionist lawsuits. And that's miles offshore rather than in their backyards.
This Google photo is simply indicative of the power of the NIMBY faction that I had occasion to observe first hand:
http://maps.google.com/maps?q=cos+cob+c ... ,,0,0&z=14
First, let it be noted that a one-time railroad facility is shown. Note the waterfall on the Mianus River and then note the brick building to its left. That was once a pumping station owned by the New Haven that supplied water needed for the boilers of the power generating station on the West Side of the Mianus.
Also note the construction equipment parked on a road in front of that building; that was the original alignment of US1 when I was kid.
Now "twirl" the photo to the Left (West) and note the White building. That building was right in the path of the intended alignment when a new bridge was build over the Mianus during the '60's. However, the building owner refused to sell and the Highway Department had no choice but to locate the alignment on its existing path - and condemn even more property in the process.
Progress? uh, more likely the power of the affluent at work.
Also, how about reviewing Kelo v. New London, a US Supreme Court decision, at any of the law sites; allow them to describe the facts of the case. i think it was bad law, but then I'm not Aretha (whoops, a Supreme) in this life - in fact not even a lawyer.
All told, Mr. 2060 (New Haven FL-9's were 2000-2059), accept the Corridor ROW as it exists.