The intent is to create an incredible visual spectacle that will greatly titillate viewers of your moral persuasion. The theme is Roman gladatorial combat. The technological capability is modern Hollywood, and the budget is a billion bucks. So, what do you do?
I would stage a REAL "Survivor" game.
I'd make it a TEAM sport.
I'd START by taking a remote island somewhere, with some interesting terrain, and put video cameras all over it. (Think along the lines of Arnie's movie
The Running Man.) I'd put spears, swords, slings, all kinds of weapons around the island, and make the constestants search them out, just like in the video game
Doom.
I'd put Aryan Nations types, Klansmen, and skinheads on one side of the island, and Black Panthers, Hanafi Moslems (Farrakhan's bunch), and black street gangs on the other side of the island. Then I'd let them fight it out. Maybe the survivors could face winners of a Latin Kings/MS-13 vs. Tong/Yakuza preliminary bout for the championship.
For man vs. animal matches, maybe I could capture some Iraqi/Iranian terrorists, and set them loose on an island with some genetically engineered wild boars (!) with a taste for people . . .