I'm on the hook for this because I am an idiot. Sure, I thought Fable was ok, but that's about all I can say for it. I think the ending of the first game was far too abrupt, especially for how epic and adventure it was said to be...by Peter Molyneux.
But, if they do actually flesh out the story (and especially the ending), then I'll be pleased. And if the co-op play ends up being online, then it's going to be difficult for me not to enjoy the game.