A Nightmare on Elm Street. Actually, no.. They should just remake the original masterpiece, and dumb it down all the while making Freddy look like a deep fried Kevin Bacon.
Wait, they did that.
Hellraiser, but let's remake that one instead of giving it more sequels, and let's make it shitty with modern day CGI and ruin another masterpiece.
And then we can continue making SCREAM movies and ruining the original movie which was a masterpiece, just so we can make more money and please modern day teenagers who want to see a dumbed down shit 'slasher' movie which has incredible potential, but won't ever live to it.
And then we can remake Halloween and do a good job on the first remake, and then make a dumbed down half assed sequel to that because we're Rob Zombie and only made the sequel to the remake because we feel we NEED to do it...
And then we'll remake Child's Play because we want to ruin another masterpiece, we are Hollywood and this is what we do because we're too fucking stupid to think of anything that hasn't been done before.
But to answer your question, give A Serbian Film a sequel, as well as Clive Barker's Nightbreed.