I kept Golbez's palette exactly as it was. Edge was demoted from a playable to a non-playable character (think Siegfried but less weird), so his palette got demoted as well. But I'm actually pretty proud of how he turned out with so few colors.
I have encountered two bugs so far:
- Any palette assigned to a playable character outside of the "normal" selection of palettes will fail to appear inside the Chocobo Forests. I'm willing to live with this, although if I could find a fix, I'd take it.
- In some dungeons, Golbez does not display properly if you save, exit, and resume the game. Not a huge deal since this is all on emulator anyway.
The Kain actor was used for Cid #2. Cid rejoins when he rescues the party from the Tower of Bab-il, and he stays until you get the Big Whale. Golbez then took the Edge actor's slot.
So yes, Edge is completely dummied out. Or rather, converted into Golbez. Really, I just switched the two characters. Edge is the one who fights beside FuSoYa at the end of the game. I did not take the "real" Golbez and try to turn it into a 100% playable character. This seemed to me like more trouble than I could handle. Much easier to take an existing character and change him into Golbez.
Nothing against Edge, but he is my least favorite and is less important to the story than Cecil, Kain, Rydia, or Rosa. So he's the one who got the boot. Edge is also the closest thing to what I think playable Golbez would be like. So, using Edge means fewer tweaks are needed to stats, etc. I even kept the portrait palette the same.