Xbox-wise, maybe. Love or hate, Deus Ex: Invisible War is also another open-ended RPG worth playing. Although, as a collector, I would opt for the PC version since the system spans from the original to Human Revolution: Director's Cut.
To get back on subject... After Fable III, it's as if Lionhead hit the top peak and then downfall all over again as Fable Legends seems to be an MMO dungeon-crawler.