the original is in my top 20 films ever, it should not be messed with.
Seriously though, rybev is totally right. How could the original film honestly be improved? Whoever thinks there is something so wrong with it that it needs to be made again from scratch is deluded.
But it'll never work. No actress can quite capture the role like Sissy Spacek, she just was Carrie. Incredibly effective performance. Plus I don't think a story of oppression under Christian fundamentalism is a very good idea for a release at this point in time.