So what was so wrong with Doom 4 that it had to go back to the drawing board? Studio director Tim Willits says it wasn't just a matter of a single, easily fixable problem. "Every game has a soul. Every game has a spirit. When you played Rage, you got the spirit. And [Doom] did not have the spirit, it did not have the soul, it didn't have a personality," he said. "It had a bit of schizophrenia, a little bit of an identity crisis."
Willits told IGN that id has now "cut distractions out" for the restarted project. "We focused everybody. All hands on deck," he said. "If you have everyone marching to the same drummer, you can get places."
Of course, that laser-focus also means that other franchises have been put on the back burner for the time being. Willits noted that the Quake brand is "critically important" to the studio, and that they're "not going to forget about it." Willits also recently noted that Rage isn't dead, and in this interview noted that he might be open to licensing if a developer has a strong concept. "We don't have anyone right now, but that's a possibility."
Between juggling those three franchises, though, id doesn't have much room for trying new things in the immediate future. "I know we're not going to do another new IP," Willits said.