While, I didn't play a mage but a warrior, I was glad to be able to flesh out my human PC. I chose the option with politics. The Trevelyan for me ( in my headcanon ), are lovely parents, but power hungry, unscrupulous, ruthless, very good politicians, fighting to be the best, the most influencual family, the most powerful in Ostwick. People which don't hesitate to shed blood for that.
And that's where come from many characters traits of my PC ! 
The religion option was good for me too, I like to think that my noble has many cousins among the templars and the priests of the Chantry and that my family was very pious.Since I choose the templar path as allies, it helps me to flesh out even more why my pc chose to see them first rather than the mages.