Carpenter's one of my absolute favorite directors of all-time, but I don't think his style fits in a 2014/2015 era. His time has passed, and anything he made now would be called "cheesy" and "amateur" by people whose standards aren't in the context of the 70s and 80s. I'm not hating on Carpenter; it's the same with Hitchcock too to an extent. If Hitchcock were alive and made one of his regular Hitchcockian movies now, NOBODY would think it was scary, and people would probably blast it. There's a certain mystique/aura that comes with certain filmmakers like Stanley Kubrick, who was mostly hated and criticized in his day. Almost none of his films were a commercial success, most had bad reviews, he never won an Oscar, but now he has this untouchable reputation as perhaps the greatest director who ever lived. Release one of his movies now, and he'd probably still be hated. The sad thing is, when Carpenter dies, he'll finally be regarded as one of the greatest filmmakers ever - now not so much.
Cliff's Notes Version: I say "No" to Carpenter directing ATMOM. I think it would be a critical and commercial disaster.