The problem is getting those high-level, non-demonic armors in the original (note: pre DLC and pre the now-unlikely expansion(s)) game on the heavy armor side and just toning down the overly glossy light armors, in general, in my opinion.
I sure hope they don't do away with expansions in TES V.
As for variety, all I can think of that can rival Daedric and Glass is Nordic Mail armor and perhaps armors from other planes of Oblivion. And artifacts, of course.