1. At this point, if it doesn't want to be savagely kicked in the kidneys by the gaming media, 3D Realms is going to have to produce, not only the greatest game ever devised, but also the greatest work of art in the entire history of human endeavour. They're going to have to come up with a piece of software that can keep gamers occupied for centuries, pass the Turing test, and restore beloved dead pets to life. And if it doesn't fit every single one of these criteria, the car park of the 3D Realms building is going to play host to the biggest effigy burning in history.
2. Any audience this game could have had has whittled away to a band of rabid fanboys blinded by faith. The amount of people who are still on the edge of their seats waiting for DNF could now comfortably fit in a church hall, and there would still be enough chairs left over to make a big modern art sculpture of two donkeys fucking.
3. It's not even a very good idea for a game. Gamers these days have gotten used to a certain amount of sophistication in their game plots, and a big obnoxious musclebound chauvinist carrying fourteen tonnes of weaponry single-handedly foiling an alien invasion and being cruel to women isn't going to fire the imaginations of today's cynical gaming audience.