Keep in mind that Talents aren't meant to be character building, but story building. Talents are there to further the overarching story line, not so much to add a touch of magic or to be fun things for characters to posses.
So, to that end, they'll likely be specific and appropriate for that part of the story. Not so much a catalog of awesome, nifty, magical abilities that you discover you have by turning knobs and pressing buttons.
I believe it's been said that Talents may also manifest in people who are active in the story and present during a crucial moment, in order to further the story.
For example: Say the searing plague breaks out in a bad way, someone who has the innate talent and who is around at the right time may find they have a Healing Talent.