Mariner Class said:
I should have phrased that better.
Let's say a movie was made this year, but set in 1970. One of the characters gets his first car, and it happens to be a Dodge Challenger.
However, instead of the 1970 model, in its place they use the 2008 model.
The argument: "The new Challenger has the same lines as the original, but it's more modern for a 2008 audience."
Is that more clear?
That is not an accurate analogy, because the 1970 are an actual time period and Star Trek's 2360ies aren't.
However, things like that happen, the "hero car" in "Gone in 60 seconds" was supposed to be a muscle car from the late 1960ies, but they didn't go with the original look of the car, but used a modernized version.