Daniel Radcliffe had previously said that a revamp is "inevitable" and suggested that he could play James Potter, Sirius Black or Albus Dumbledore, depending on when it happens.
When asked about the possibility, Felton quipped: "I'm already signed up! Lucius Malfoy will be my part.
"I'm sure these films will last a very long time. I can't see audiences boring of them anytime soon."
Grint said that the idea of remakes would be "interesting", adding that he would "be quite looking forward to seeing that".
However, Tena, who played Nymphadora Tonks in four Harry Potter movies, expressed her opposition to the idea, saying: "If they do, they deserve to die! No, no, it's terrible!"
Lynch said that it would be "weird" if the films were remade, but admitted that she would definitely "want in" if it were to happen.
Photo gallery - Harry Potter studio tour: