I have an idea.
Instead of making a canoe patch for the Switch Rom of Trial of Mana, why don't we make a patch from scratch, that ports the English script of the Switch rom to the Japanese snes rom.
And the font can be VWF instead of hi-res so that it won't look ugly when working on canoe.
In other words, give Trials of Mana the "FFV-GBA Script Port" treatment.
Who is this "we" you're talking about?
If you make a patch from scratch then you just end up turning the regular ROM into what they did with the Switch ROM. And if there's already an official ROM, why go through all the trouble?
The ROM will still need to be expanded, and Canoe will not accept it unless sluffy comes back and magically finds a way to make a patch. The base vanilla game already has trouble running on Canoe, needing a bunch of patches to fix graphic mistakes, and there's still slowdown and music glitches in some areas.
It's best to just run the game with retroarch.