Wonder what the other mode will be would be. Would be cool if they added a few more modes later on. I'm hoping for a king of the hill style mode. Also wouldn't mind another FFA mode, maybe like a tag style game where one person is the target and the person who kills him becomes the next target and the only way to net points is to kill the target and get kills as the target along with staying alive while being the target. Only problem with this idea is people would complain about kill stealing on the target.
No. GoW1 didn't have it. GoWIII removed the glitch allowing it. Each version that had it, had a variation without all options.
Papy says so. Also, "NG+1" is spoken of as an alternate foe layout for SP with the MP champion used rather than Kratos. He doesn't promise it will make it into the final cut though (which would be a grand shame).
Suits me. The Arena and challenges can already tackle this, but whatever works. One place to do killing is as good as another.