Hi there, irvgotti452!
The topic's been tackled a few times, so you can search the forums and find overall positive answers towards this.
My take on what I've read about this:
- you'd be typically expected to try and PM the original author(s) to ask what they'd think of it
- you're anyway welcome to post a patch upgrade, provided you give credit back where it's due.
I happen to have had a chat about this very game with Saito. (I haven't invested time into working into the project, for unrelated reasons.) You should do the same (I mean - you should talk to Saito

).
EDIT: So what have you changed? I can see the font is different (though now variable-width yet, is that planned?

) Note: a, b, c, and d seem to be shifted down 1 pixel compared to the rest of the text, if I'm not mistaken.
Are you going to reuse the existing translation from gamefaqs? (It seems so, right?)
And since I'm at it, are you building tools for the game?