*SPOILERS*
Arngeir also says that he may reappear at the end of the world to fulfill his job of eating the world since you don't devour his soul.

I guess the Thalmor may get what they want after all then...
I see Talos as a hero of man. Man, mundus and The Eight seemed to survive quite well before he arrived as Tiber Septim and the Eight don't seem too fussed now he's taken some of their limelight.
Sometimes people went over the Top with worshipping Talos, eg: Morrowind's Talos Cult mentioned in Gnisis Legion Outpost. In Oblivion, The prophet always referred to him as slightly seperate, as if he wasn't quite comfortable that he'd mustled in. He always used the words "The Eight and One".
Me? I think if Martin wasn't a version of Akatosh, then he should be raised to godhood himself. Ten Divines and counting. That would cause a stir!