I have rarely seen movies in genres like this be good on their own merits. Part of the greatness of the Walking Dead, while not being an absolute pure adaptation, is it kept alot about the comics that made them great. This movie is not doing any of that. I would have loved to see the interview seens, with the flashbacks to the experiences of the witnesses. That would have been great. This looks like Brad Pitt in 28 Days Later.
I agree but don't think there's any way they can cover of all that in a movie. It would need to be a TV show or at least mini-series, like you mentioned with the Walking Dead.