I voted Azura in the first poll simply because she played a huge role in Morrowind and was rekindled in our memories though briefly in Oblivion when we received a waypoint to her shrine where we could obtain her Star.
For the second, I voted for Peryite. He is the most basic Daedra Lord in my mind and it would have been nice for his realm to not be copies and pastes of Mehrunes' Caricatured Hell.