"Court Wizard Tarhiel hasn't been seen for some time and people are starting to get worried. Anyone who knows anything about his whereabouts should report directly to his lordship Caros Cocceius." -> after Tarhiel's death, a new Court Wizard needs to be appointed. the player can help to make the decision between Tarhiel's two apprentices; the arrogant but gifted Altmer and the hardworking but talentless Imperial. The player could test the two apprentices: make them enchant stuff, summon Daedra and/or even have a wizard duel.
"You know of Phyrios Mattimus, the exiled Duke of Deshaan? There's a rumor going on that he's having a love affair with a Dunmer commoner. And not just any commoner--a convicted thief who's being held in the Legion dungeons!" -> there's a Dunmer woman in the dungeon whom the Duke supposedly fancies, could be a social quest there. The thief stole something from the Duke’s chambers; the Duke caught her red-handed and fell in love at the same time. The thief’s in the dungeon cell, showered with fancy gifts. She isn’t into him.