I would personally enjoy it as more like a $20-30 DLC pack.
Though the new characters, I don't like that, the first four characters are perfect.
Bill, the old crazy guy that's good with a gun. Francis, the biker that cares for nothing but his own survival. Louis, the normal everyday office guy. And Zoey, the girl that um...runs or something?
Though I do like the whole day time. It makes sense for people to be traveling in daylight. No reason to travel at night unless you want to become one of the zombies.