If you could introduce a certain prop or piece of gear...

[Gegenji]

A lot of the stuff I'd like to have added has already been mentioned - mostly in the way of clothing options and the ability to use hammers as PLD (and reach Chachan's True Form as Hammer Samurai... or, as I like to call it, Hammurai).

 

Beyond that? Well, since Chachan is a smith, I'd love it if there were mounts for your house/FC room where you could "place" gear and it would show up on it. Dummies, wall hangings, something so Chachan could "display" the gear he's made as part of the whole smithy aesthetic. Even without that, I would figure there would be some use to being able to hang a sword or axe or something over the mantlepiece as a family heirloom or something.

[Viola]

Now that I think of it, I would like a set resembling the Valkyrie Armor of the Valkyrie Profile series.

 

It looks nice, practical, and above all it's naturally blue. (and can come in a deep purple as well)