I was only agreeing with the goodly Lord Dagon that bloodlines of gout-festered idiots don't determine rights to the throne. I was not saying an Emperor needs to be cosmicaly aware of their place in the world to be a money grubbing, war waging, conniving beurocrat.
Actually, the bloodline does determine right to the throne. As can be seen be seen by the Elder Council disinheriting Uriel IV's son so they could have an Emperor more closely related to Tiber Septim.
The Emperor is largely ceremonial, because the Elder Council has been the true power in the capitol for a while, at least during Uriel VII's reign. I barely know any other Emperors by name, so sorry for not pinpointing the years the Council truely began flexing its muscle. I also think you over estimate the Legion's loyalty to the Emperor, many in the Legion are Orcs and assorted mercenaries, iirc.
The Elder Council has been waxing and waning for years. They were constantly gaining power until Uriel VI. Until him, they were the ones that controlled Tamriel, with the Emperor only having the right to veto. Uriel VI used both the veto, and threatening council members so that they would do things his way. Empress Morihatha followed a similar pattern, as did Pelagius IV. Uriel VII was truly an Emperor in the sense of ultimate authority, his word is law; no one gainsays an Emperor.
The Emperor is also the leader of all the Legions. And the Legions are made up of whatever race is most abundant in the Province they're in. But most of the Legions seem to be made up of Cyrodiilic Humans, Nords, and Redguards. Orcs got only recently accepted into being non-monsters and citizens of the Empire.