To be fair, I'm not sure how NES FFI, in any form or shape, can be recommended to people as the 'definitive' Final Fantasy I, with the PS1 and PSP remakes around. I played the GBA version, PSP version, and finished the PS1 version of FF1 a few weeks ago, yet I've never even considered touching the NES one. All the others (I prefer PS1 over the others because of presentation and translation) seem much better. All this goes for FFII too.
Personally when playing through a series for the first time, I like to play a game in its original form rather than a remake so than I can see how its gameplay, graphics, and presentation evolved. Going from GBA/PSP FF2 to NES FF3 is a little strange to me, because then FF3 isn’t really much of an upgrade. Likewise going from DS FF4 to SNES FF5 is just as strange to me. Of course, once I’ve beaten a game in its original form then I’ll play the remake so I can appreciate the updates it offers.
For example, going from NES FF1 to NES FF2 you get to see how FF2 improved on these areas:
* improved battle HUD with new sliding menu
* expanded battle backgrounds a teeny tiny bit
* final boss actually has its own music
* an improved text engine with line scrolling within text boxes
* a much more character-driven story with twice the dialogue
Sure, the remake versions of FF1 already offer all of that, but then going from remake FF1 to remake FF2, FF2 suddenly upgrades a lot less to FF1.
Likewise, going from NES FF2 to NES FF3 you get:
* the classic “big blue bar at bottom” battle HUD is established for the first time
* improvements to battle HUD in general, such as the ability to view your entire inventory
* auto-targeting is added
* bosses now have boss music too, not just final boss
* major improvements to menus all-around, the original FF3 established the basic menu layout used from FF3-FF9
Again, you lose all these things when going from remake FF2 to either version of FF3, since then FF2 would already have all of these improvements, making FF3 suddenly offer a lot less that’s new.
I won't have any problems playing his translation, I just wish that his translation was also made as an addendum for either FFRestored or Grond's FF.
Because those two hacks are what I consider the definitive Final Fantasy I game.
I think you’d be missing the point of doing a FF1 translation, to be honest. Sounds like what you’re looking for is a title screen patch for FFR or GFF.
The whole point of translating the Famicom version of FF1 is so that people who want to play the original game with all of its original quirks intact can play it as it is. My projects aren’t “definitive edition” hacks, they’re just plain and simple translations with no gameplay alterations whatsoever. I would have no idea what kind of “addendum” I would do to a complete hack like FFR or GFF.