There is sadly no way to know. Most translators don't really talk much about these, so you have to ask around. Depends on the system, too. Most interesting 8-bit/16-bit games are arguably done, but not that many for CD-based systems (longer games/scripts, tougher technical challenges etc.) On the other hand, newer systems like NDS/3DS/Wii are actually covered very well.
Well that's a bit problematic but still it is interesting to know that CD-based still have some games untranslated. Maybe I'll try messing with them someday.
You're still welcome to continuing working on the game, but I thought I'd let you know I was working on it and have it in an almost complete state. The game really is a pain to work on, but it'll probably be finished this year.
Btw, I solved all the space issues in the game by expanding the ROM and relocating all the text between different banks. That's generally the easiest/best approach to take when translating these old ROMs.
Well I was just starting anyway. xD Maybe it is better to wait for your translation and learn from it. Anyway I searched around and saw no info about translation of another game I am interested, Atelier Marie gbc version. Last post of someone asking about it was in 2019 so I decided to try it. Looks like it have a lot of space to work. Btw, do you have any more guides or know of some interesting ones that I can look into?