It seems to be hip these days to re-make John Carpenter films. Cases in point: Assault on Precinct 13, and most recently, The Fog. But one could argue that these films lent themselves to being remade. And of course, Carpenter sanctioned both of them. Why?
Many see the original Assault as a classic. But it is a classic in the sense that it was filmed on an extremely low budget and is nevertheless extremely effective. It is thus an example of what can be done despite limitations. Someone in Hollywood obviously thought that the basic setup could be a good film. The 2004 remake, however, was not a huge success, and certainly did not fare as well as the remake of The Fog.
Carpenter himself has frequently expressed displeasure with The Fog. This most likely stems from the multiple cuts that were required to make the film entertaining to test audiences. In modern scenarios, this usually ruins a film, but Carpenter insists it the made the original better. Still, he never seemed to be impressed with the final result, and even said recently that it was "the least favorite" of his films. Thus he served as producer on the remake, a role much more involved than his role in the Assault remake. The late Debra Hill also served as a producer in pre-production before her untimely passing. The involvement of both Carpenter and Hill cements the remake as nearly a true remake, somewhat akin to what Hitchcock did with several of his English films when he came to Hollywood. However, Carpenter obviously did not direct the remake, and unlike the suspected role of Spielberg on Poltergeist, he did not seem to influence the director's decisions in any major way. Thus one can respect him for not wishing to retrace his steps himself.
Despite all this, one can assume with relative confidence that Halloween will not be remade any time soon. The franchise still seems to be going strong as a continuing storyline (despite all its twists and turns, and various entries which ignore various others), and thus a remake would be incongruous. However, it would not really surprise me if the producers at one point decided to start all over and remake the first film, then continue from there. But regardless, there is no chance that anyone could ever again reach the classic status of the first film. There are so many elements in place in the original that cannot be duplicated or replaced, not the least of which is the legendary Donald Pleasance.
Thus Halloween fans can rest assured, for now, that although many of Carpenter's other films seem to be subject to the Hollywood remake, bug, Halloween remains in a secure vault of originality and induplicability... for now.