Without the solid gameplay, that is two-steps beyond button-mashing, it would just be a post-hippie brain-washing tool.
However, aside from that I would say the game is mediocre. The story isn't great, particularly for an RPG. The characters are few, the bad guy is not rewarding, and the world is nothing brilliant.
The ideas of morality and purity are incredibly screwed up. Just tell any normal person about a game where you gain morality and purity points by eating tofu, lose them by eating meat, and then say that you can have sex with prostitutes in the game, buy condoms, practice polygamy, and that a third of the population is homosexual or bisexual. It will dawn upon you, and be blatantly obvious to them, that this is biggest push of post-hippie morality ever put in a video game.
Marriage & having children is unrewarding. Your spouse is a drone. Buying houses has financial benefit, but the whole house framework isn't a selling point. The choices in the game are limited and black and white. It's not even close to Mass Effect.
If there is something that is rewarding, it's killing those stupid gargoyles. Although, I had no idea about the gargoyles until I was over half-way done. I just thought some enemy was mocking me from afar. Die gargoyles, die!
And forgive me if I'm not your normal Fable player, but I didn't build an attachment to the dog. I actually was shocked more at an NPCs death, who was killed by one of the "good guys", than anything bad that ever happened to the dog.
I wouldn't spend $60 on this game or Fable 3, if the past two are precedents.
And honestly having a cinematic that slow-mo's around bird poop?
"Let's see we can stick in a video game guys and see if people will still buy it?"