Battle Royale remake

The reason why BR only really works in Japan is because of they are a homogenic society.
Because the movie was, initially anyway, about the social effects of an economically failing country, being all-Japanese eliminated the main issue that will plague the American remake: race.
In the American remake, you're gonna have to include whites, black, asians, hispanics, etc, and that means stereotypes. Then there's the social cliques that each of these kids hangs with...those will be stereotyped too.

If you have a look at Lord of the Flies, they were all white British boys.
If you have a look at Big Brother (in Australia anyway), they're all white. This season introduced the very first asian, and she was a chick. Never mind that she was the most bogan asian chick ever seen, and a total skank bot.
Lost handles it very well, although it too borders on certain cliches of each of the different ethnicities and social stereotypes.

But you get my drift.
When you get further along BR, it was more about the breakdown of friendships because of the extreme paranoia and the instinct for survival.
In a movie that includes kids of varied ethnicities, it would be very difficult NOT to bring up extreme racial prejudice as a reason to kill the other person.
The other main reason for a kill in the movie would be because of social clique.

Jam it back in, in the dark.