Alright. Just a quick example on how HD would look, I ran one screenshot through a vector program, and it kind of gives you an idea what to expect.
We see old Disney animated movies getting a Bluray-makeover, and it has never been this good before. Same goes to CMI. It's backgrounds at 640x400 doesn't really look that good on a huge screen.
Two examples (remember to view them full screen):
As you can see, only the improvement is STUNNING (at least on a 40 inch monitor). And then.. with a directors cut of CMI, with those cut scenes and so on, would be simply amazing.