Frankly if there was a reboot/remake of something I'd want to see, then we'd have something to talk about. If they decide one day to remake Soylent Green, that will be awesomesauce. That, and maybe a remake/sequel to They Live which they could call "They Live, We Sleep". Both would benefit greatly from today's sfx.
But the only remake I can possibly think of that I enjoyed over the original? Fright Night. It just worked way better, as far as writing, casting and setting. The sfx were only marginally important to upgrade, the rest of it was what made it more enjoyable.