A system is already in place that allows you to convert any item you have to the Imperial Motif if you bought the collectors edition.
I think we really need that ability to do that for all other Motifs you own. It would allow players to change the look of quest rewards and dropped items. You could even add a new system for making it cost materials to change the the motif.
Also, it would mean you don't have to craft new sets to change appearances. For example, say you craft Daedric set, but but end up disliking it, or getting bored of it. With this system, you don't need to recraft your entire set with a new motif - could just change the existing appearance.
Thoughts?