So I've decided what I want to do with the Power Stone-Blacksmith set up.
For a reminder the Blacksmiths are replacing the Dancers fully because while amusing, they are not worth much. This does give me one more dance than there is dancers so I'll likely throw a Blacksmith into a town without a dancer, probably the Feymarch, might want him to make something special for Rydia (Since I have the Katana's covered)
I knew I wanted to do something relatively beneficial but I couldn't be sure what, my mind hopped between making them forge better weapons and armor and then my mind caught up and I realized that FFIV isn't really set up that way by default and it may cheapen the experience if you turn an Ancient Sword into a Volt Sword and then you win a Volt Sword anyhow. I was also thinking of battle items, but that's what Hunt is mainly for and I didn't want to bite into its purpose. So I thought about it a bit more and realized that my hack only gives out Accessories in very sparse quantities but I then thought it through a little more and realized that it may be Too constrictive.
So the Blacksmith's still hold their original purpose of duplicating Katana's for Edge's Katana Soul command, but they now can also make accessories using a rare item called a "(Ring)Catalyst" (replaced the "???" event item. It may still have an event tied to it) and several power stones depending on the presumed usefulness of the accessory. Let me show you how this will work in pictures...





So as you can see, each town will be able to create its own accessory and no accessory is something a party member already comes with. Power Stones will be a bit more common (maybe Uncommon is the right term) currently they are the common drop from a select few enemies as I wasn't sure what I wanted to do but with their renewed importance they will be the uncommon drop of most enemies now.
The plan is for each dungeon to contain 1 Catalyst, to give the player some choice on what they want to use it on (or to just use the Catalyst on the overworld for an effect I haven't decided on yet.)

I'm somewhat shocked that this all went through without a hitch, so these blacksmiths are prepared for when Edge arrives and they give their accessories just fine. I'm running out of text space all around, but I'll see what I can do.
In other news some dungeon maps have been lightly modified to hide the Catalysts in each dungeon, so don't expect to just run into it in where a chest would normally be. All in all though I don't think they're too difficult to find, it's mostly remembering where it seemed there would be treasure in the original game or if certain places were walkable on the map.