And everyone pretty much already made the point that it wouldn't work on a societal level. Hence my offering that the tech angle would be a more viable choice, in which case the emphasis shifts to the teenager of today being a fish out of water in 1985, rather than a teenager of today shocking the kids of 1985.No one's denying technology has radically changed but society is more the question.
Societal change has been huge in the area of how information tech has changed people's lives, but as Marty's tech wouldn't work in 1985, there'd be no practical way to wow the natives with the wonders of it...it would have to be the other way around--Marty having to learn to live without it.
I'm not saying that it would be a brilliant success of a film like the original was. Just that it's the more viable option for how the original film's premise could be used today.