What do you think about making a set of armor similar to the main character's of the upcoming Ubisoft game, Assassin's Creed? Perhaps with enchantments similar to Dark Brotherhood armor.
If it does not follow the lines of a present armor in Oblivion, so that the present armor can be retextured to look like it ... you will have to wait until modeling is possible for Oblivion. At this time, there has not yet been an importer tool made for 3d modelers to insert their work into Obliv.