Well, maybe they could do it in the final season, when it's already been decided to not continue the series. Not bloody likely, of course.
I guess I'd just love to see the world go up in flames like that, it would be awesome. People need controversy, a good kick in the values every now and then.
And I don't think the show would have to shut down, actually. It'd lose some, but also gain some. It wouldn't be win-win, but it would definitely gain respect and publicity.
Of course, again, Hasbro has no interest in that sort of publicity, I'm sure.