Grinding for certain gear sets oftentimes results in a profusion of items with undesirable traits.
While the traits may be undesirable, the look or design of the gear may be very appealing.
The look or design of this otherwise undesirable gear may be more appealing than the best-in-slot gear for a particular class or of a weight (light, medium, or heavy) that is ruled out by a particular build.
If for a player there is an aesthetic concern with how his or her character appears that cannot be satisfied by his or her currently equipped gear, there are only two options: collectible costumes and accoutrement awarded for achievements or purchased through the crown store and costumes used in quests which are equipped using the costume slot, e.g. Kollopi essence.
Using the existing costume slot and profusion of farmed gear with undesirable traits that might have the right look for a particular character, it is easy to imagine a costume crafting station (possibly added to the dye station) where a player can slot from his or her inventory into the crafting interface a head, shoulders, chest, hands, belt, legs, and feet, apply dye to each piece using the three-color system, and craft a costume taking up one inventory space which can be equipped using the costume slot.
In practice, this will allow for more customization of costumes than is presently available, make use of an underutilized slot, allow players more versatility in appearance (a heavily armored magicka user, a robe wearing tank), and develop a new form of artistic self-expression.
Additionally, players would be able to utilize their hard-to-find and expensive motifs to craft pieces for costumes without having to worry about changing a build or losing function as a result of using crafted gear over farmed gear.
Special costume pieces may also become available as loot, quest rewards, or purchased through the crown store--items having no armor value or any practical use other than costume crafting.
Just a thought.