Most remakes are of movies that really couldn't have been done any better, which I feel like is a pointless endeavor. But there are so many movies that weren't perfect that are begging for a new attempt, movies that were flawed but that had good foundations, and that would work really well in today's world.
Which one would you like to see? How would you cast it? Would you need to modernize the core concept, or keep would you keep it the same?