Oblivion orcish is not western at all... it is more like mongolian, which is asian: http://www.trumanstudio.citymax.com/i/1aGhengisKhan400.jpg
The samurai style armor in Oblivion is the Blade's armor, and I find Oblivion's orcish very good: not very stylish, but great on an orc.
The daedra armor in Oblivion isn't western, either, and I find it quite better than Morrowind's one, more akin to a creature from another plane than a "dark samurai" armor.
Not everything was better in Morrowind, you know?
I think the ancient mid/near east is an untapped source for armor designs in general.
Babylonian inspired designs would be perfect for the http://www.google.com/imgres?imgurl=http://farm5.static.flickr.com/4001/4506034494_8d63b9a74b_b.jpg&imgrefurl=http://www.flickriver.com/photos/cool-art/4506034494/&usg=__vWLYYoQrjyovI6D6gC38kZ5spc4=&h=1024&w=783&sz=513&hl=en&start=293&sig2=IdRtmC4tWMaOR_TMqZ9_lg&zoom=1&tbnid=qANp3rPxJQ5WIM:&tbnh=122&tbnw=118&ei=2tI6TfzdHIfCsAOFu7WjAw&prev=/images%3Fq%3Dancient%2Bmiddle%2Beastern%2Barmor%26um%3D1%26hl%3Den%26sa%3DN%26rlz%3D1R2ADRA_enUS412%26biw%3D1007%26bih%3D555%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=265&oei=49E6TfCiN4zCsAOx-5WJAw&esq=8&page=18&ndsp=17&ved=1t:429,r:16,s:293&tx=79&ty=75
If you ask me, I would say that dwemer are very based in the babylonian culture, armors included... not the Morrowind one, but Oblivion's.
In the http://www.uesp.net/wiki/File:MW-art-Dwemer-Concept.jpg, they look pretty babylonian, don't they?