The only reason you would want to wear armour of different armour sets is so you can look like a colossal pillock. The only armours that blended well in Oblivion were leather, iron, chainmail, and steel. Someone may want to wear only select pieces of armour for fashionable asymetry like with the many amour slots in Morrowind but that's about it. If you're conserned with not having enough enchantments available, just make the main piece of armour able to have multiple enchantments on it.
What about http://www.google.co.uk/imgres?imgurl=http://celluloidpopculturejunkie.files.wordpress.com/2011/05/87992-004-9307aad1.jpg&imgrefurl=http://celluloidpopculturejunkie.wordpress.com/2011/05/13/nispels-conan-the-barbarian-gets-new-trailer-new-poster-and-reportedly-still-has-a-hard-r-rating-as-should-be/&usg=__wD2mOwoWnoG4Hwe35ZaWMgpU1EU=&h=450&w=353&sz=17&hl=en&start=0&zoom=1&tbnid=bCfqh56XljqPDM:&tbnh=147&tbnw=115&ei=yi0LTsz9HsuVOriY0JcB&prev=/search%3Fq%3Dconan%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1149%26bih%3D629%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=251&vpy=113&dur=615&hovh=254&hovw=199&tx=138&ty=119&page=1&ndsp=18&ved=1t:429,r:1,s:0 or http://www.google.co.uk/imgres?imgurl=http://content8.flixster.com/skin/profile/10/84/70/10847002_profile_mbox_background.jpg%3Fversion%3D20080803050959&imgrefurl=http://www.flixster.com/actor/bruce-lee&usg=__tXkzBKJ0qFLa9VLTO1vVhS1Y1bU=&h=340&w=316&sz=13&hl=en&start=0&zoom=1&tbnid=d3Nm6IPOmwwIWM:&tbnh=152&tbnw=141&ei=NCwLTq20HpCXOvaIjZEB&prev=/search%3Fq%3Dbruce%2Blee%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1149%26bih%3D629%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=147&vpy=117&dur=4144&hovh=233&hovw=216&tx=115&ty=135&page=1&ndsp=20&ved=1t:429,r:0,s:0 or http://www.google.co.uk/imgres?imgurl=http://baldandeffective.com/uploaded_images/emporer-727374.jpg&imgrefurl=http://baldandeffective.com/labels/pants.html&usg=__q0eDGYFLWgf2jK90Dk4ZbGezCxE=&h=648&w=398&sz=82&hl=en&start=30&zoom=1&tbnid=LODkWJ1xd5UjXM:&tbnh=140&tbnw=94&ei=bywLTqLyPISaOuCv-JgB&prev=/search%3Fq%3Dno%2Bpants%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1149%26bih%3D629%26tbm%3Disch&um=1&itbs=1&iact=hc&vpx=737&vpy=144&dur=2315&hovh=287&hovw=176&tx=115&ty=145&page=3&ndsp=16&ved=1t:429,r:3,s:30....alright maybe not the last one. But you get the idea. The idea that there is no variation its either full clothed or not fully clothed, and that's a little be odd to me.
Don't get me wrong, I wont cry about it and I will still play the game. But when I want to bust out a pair of leather greaves with a shirtless vest, I cannot.
If the opportunity is there to make your voice heard, you would be silly not to take that opportunity.