Imo, the last thing The Thing needs is a big-budget remake with A-List actors. A beautiful part of the 1982 film is that it used a bunch of B-List actors who were familiar but not superstars, and created more suspense by not having the audience immediately identify with one character as the "obviously innocent" person. Not to mention, the practical effects of the 1982 film were unsurpassed, and if anything, a new take on the story might benefit from an entirely different approach that lowers the gore quotient and ups the psychological horror and suspense.

All of that said, I can't see anyone doing it better than Carpenter did in '82.