I think that it would be redundant to use Akatosh in whatever form twice in a row.
And yet there's already symbolism present to suggest Aedric links:
The use of the Imperial Dragon insignia in the trailer, a direct reference to the bloodline of Talos as blessed by the Dragon God of TIme.
The rising of a "Dragon-born," which just so happens to be the same name given to Talos/Ysmir (Dragon of the North), further accenting the Empire/Septims and the connection to Aka.
The old man in the center of the stone carving can be perceived as the human portrayal of Akatosh, with the dragon head above him highlighting the duality.
Obviously we're all grasping at the barest of straws, but I'm envisioning a plotline where Tiber/Talos/Ysmir, and the requesite connection with Akatosh, will be extremely important.