As much as I agree with this kid, he's just as annoying as Bieber himself.
But in all honesty I hope the powers that be preserve the integrity of this franchise. No remakes, no sequels, no prequels, no 3D conversions. I wouldn't mind seeing a restoration similar to what they did with Blade Runner. The best would be a theatrical re-release.
The video game looks pretty good. Video game sequels/prequels seem to have worked well for Star Wars and Ghostbusters. Maybe that's the way to continue these franchises.
The DeLorean was destroyed, and Doc and family went off to who knows when. Best to leave their future adventures to the imagination of the audience. The journey continues. That's really how you should end a science-fiction or fantasy franchise. Star Trek: TNG did it. Firefly did it. SGU did it. SG-1 did it. nBSG didn't, which is my main beef with the end of that series.