I'd love to see a form of painting and/or sculpting with this skill, which creates beautiful works of art that can be used in a player's home. Even misc. things such as hanging wind chimes(which could also teach a little bit of smithing, but would just be one of those small perks like perception is to foraging) or pretty hanging glow lights(which could teach a little bit of engineering similar to the wind chime example). I'm not sure if it would fall into here or tailoring, but it would be nice if pieces of plain equipment could be given additional descriptions based on aesthetical improvements that can be made to them.
For instance, taking a regular broadsword, and using the artistry skill to enhance it to be a gleaming broadsword. This would be a description on the blade, which I'm assuming a blade, hilt, and handle component makes a typical blade. Then using the artistry skill, you could modify the hilt aspect to display a gleaming broadsword with a severely curved hilt. Using the skill again, you could then modify the handle aspect to create a gleaming broadsword with a severely curved hilt and wooden handle. Of course, the more in depth you go with the artistry skill is the more advanced descriptions you could use, such as a hilt-less shadowy hued broadsword blade with a handle of wrapped tattered cloth, or a fire-kissed copper broadsword with a hilt made to resemble a snarling dragon. The sky's the limit.
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We are still discussing options and we are still trying to find the best plan we can that will not bring about the end of the world as we all know it. Well, that isn't necessarily accurate. The world as you know it will end.