Re: SUPER UBER SPOILERMANIA: The Ending... What Does It Mean?
I seriously doubt that Odin "willingly" gave up the throne. A few good deeds does not change who Loki is in his core and Odin is well aware of what Loki is capable of doing to those less fortunate when placed in a position of power.
Odin wouldn't be so foolish to hand over that power to Loki even if Thor weren't willing to take the throne.
It'd be like taking in a rabid dog who's had a history of attacking people after it just happened to attack someone that you didn't like.