There's no need for a big screen remake, but there could easily be a television movie, or a recorded stage performance. I think Hello, Dolly! is so innately theatrical (the buck-and-wing around the orchestra pit comes to mind) that it won't translate well to screen. Also, it's a farce, and farce just doesn't work as well on screen as onstage, though I've never understood why. Maybe timing is too important to the joke, and tempos change from night to night, depending on the audience?