I'd disagree. The old movies are so old that many have not seen them, much less the TV series. Making a second movie that follows the same basic formula but with new twists would continue in the Mission Impossible theme while still providing audiences with something fresh. Furthermore, making an action movie titled Mission Impossible makes that movie little more than a titular addition to the series.
Now don't misunderstand my point, action movies are fun to watch, but not when they are supposed to be stealthy spy thrillers. You don't see James Bond going on a rampage with a fully automatic weapon, now do you?
-Penguin