Any Battlescape player that has opened a few crystal chests will quickly find that almost all of the cosmetic unique items in the game are basically worthless. Therefore I suggest we give a purpose to those cosmetic items by implementing a fashionscape contest.
A weekly contest could be held in 2 possible ways, either in game at a set time where participating players are lined up and judged by both the contestants and the spectators. Or on the forums, where participants upload a screenshot of themselves wearing their outfit of choice where it could be voted. The themes of the contest could be as simple as just a color scheme (such as "Blues"), or more specific (such as "Evil Prince"). The themes could be voted on before each week as well.
This could bring a use to some of the cosmetic items and armors that are in the game and allow for some creativity around them.