Groundhog Day Too
If there were ever to be a sequel, the chances of Bill Murray returning are slim to none. So there's not even any point in thinking it should be called Groundhog Day 2. Instead, the "too" in the title refers to the idea that this follow-up is about a new character trapped on February 2 until he can finish his own mission, whether it be romantic or some new sort of situation. Earlier today, I joked that I'd like to see the Academy have to repeat today over and over until they got the Oscar nominations correct. They'd get to see February 3 once they smarted up and gave Sam Rockwell a Best Actor nod for Moon, for example.
The thing about a sequel like Groundhog Day Too is that it's pretty much the same as a remake, but one in which we don't have to see someone else take on the same role that Murray did perfectly. And given that eventually all movies will be remade, if it's not done this way it'll be done as a complete redo later. Just as I'm glad, or at least prefer, that the next Vacation installment is a reboot as next-generation continuation rather than a recasting of the original, Groundhog Day Too would also be the better of two evils. Oh, and since I brought up Rockwell before, let me just say he'd probably be the best actor for such a sequel.
Another idea that I thought would be interesting is a reality show -- really, a cruel experiment that's part Groundhog Day, part The Truman Show -- that simulates the situation of the movie for a contestant, who must put right what he keeps doing wrong. In a way, it also sounds like a game show version of Quantum Leap, I guess. What I imagine happening, however, is that the subject would go insane. And not only would that be bad for him and bad for the show's producers (legally), but it would make the movie's plot less believable. If that's possible.
Seriously, though, wouldn't you like to see a sequel as the lesser of two evils?