User blog comment:Relite25/What do the people want in a dlc?/@comment-174.129.62.176-20120815045750/@comment-5190971-20120815223731

As explained in my comment, it may be possible for the Daedra to 'transform' a man/mer into a Dremora, and if my knowlodge of the lore is correct, Daedra killed in Oblivion die like other beings. Anyway, Oblivion gates would take an age to set up and can be taken down very quickly, so they are not efficient unless protected. The Daedra have also been smited from the face of Nirn before, and with the Dragonborn's unrivaled abilities with Thu'um and any skills practiced religiously.