I'm convinced that during the creation Fable III they ran out of time to complete the game. 
 
The game felt like it was designed for 3 basic phases, the rise of the Prince, the fall as he prepares to defend his land, and finally a triumphant redemption, as he repairs the land from the second phase and earns back the trust from those he betrayed. 
 
As it is, the third part seems to be lopped off.  The part that gets me thinking this is A, it would have turned that gut wrenching feeling from part II around and created an even greater high, returning from such depths of despair, and B, there are a couple of dialogue hints, like when you return to Aurora and how its mentioned how many people follow a certain prophet, and how having them on your side would be helpful. 
 
Any thoughts?

" I'm convinced that during the creation Fable III they ran out of time to complete the game.  "

This isn't really a conspiracy theory but I think it clearly shines through that the game could have used s few more months in development. Then again I'd argue that it's never really as simple as a company "running out of time", because whoever the dev and whatever the game, given more time they could always improve on their current version of the game they're making.

It's more a conspiracy theory that sites HEAVILY promoted a broken game, praising it first and then later shitting on it once sales targets had been reached.  But hey, what would I know right?  I'm only an ex games journalist.