Thanks for the compliments. As for the Multi-controller function, there's two ways to go about it from what I understand. Figuring out how to restore the original Config menu, or port my whole game to the Japanese ROM. However, the game will allow a second player to input ANY commands as if they are player 1.
In my opinion, basing all of the Final Fantasy retranslated ROM hacks on the Japanese ROMs would be much better and they would be much closer to the original Japanese version than hacking the American versions to be more like the Japanese versions.
Also, I think the Square font used for their GBA and DS games is the best pixel font for Final Fantasy and it would allow to fit longer texts while still being readable. I suggest using this font (particularly, the versions used in the DS versions of III Remake and IV Remake).
A similarly large hack project for FFV based on the GBA Script Port as a collaboration with @121J would be fantastic since even the GBA Script Port still lacks some of the QoL features that are in Namingway Edition and TWUE. Maybe call it GBA Script Port Redux.