Reman ("I am Cyrodiil come")
In this example your Dovakhiin will become an leader who eventually unites the empire and ushers in the 4th era
Pelinal Whitestrake
In this example the Dovakiin is a warrior who suddenly shows up and mercilessly butchers his way through the enemies of man. this Dovakhiin would typically get killed or betrayed in the end, or simply just disappear
I for one prefer the emperor model...I am tired ob being a bystander in TES games