How to say it? Fable is fun (was fun, I've beaten it now) but disapointing. It lacks subtlety, depth. Fable falls well short of what we were promised — and, in the case of Briar Rose (a rival hero who I should have met in Bowerstone), shown.
This being the internet, I see no reason why I should throw more nerdy criticism on what I'm sure is an already heaping pile.
The Wired review says enough.