Well, permit me to get this party started.
I think the new route descriptions, complete with maps and highlights, are a big plus. (I do not recall them on the old site .. correct me if I am wrong.) They're a bit ungainly as they appear on a computer screen, even my wide-screen monitor, but perhaps they show up better when printed. Still, they offer what appears to be good info on what to see along the way for many routes.
That said, I noticed they did not provide such highlights on the route to Churchill which I presume is a pretty big tourist draw, especially in October. As I understand, the line is relatively flat and featureless for many stretches ... is that why no highlights? Still, the ON line to Moosonee is flat and, at times, relatively featureless, but having taken that line, I would have no problem coming up with route highlights to encourage and and enhance the travel experience. No such opportunity to Churchill?