Who’s to say someone’s not working on it? As much as I agree it would be an awesome pin (and the rethemed jm’s Are already sweeet!) — I don’t think starting a petition on pinside is going to suddenly make a manufacturer put it next on their upcoming games.
I’m sure they’ve mulled over a million themes. Maybe there’s rights issues with it or just to many other good themes? This year WOULD be the 20th anniversary so it would be a good year for the reveal if a manufctr WAS going to build it.