There is a script dumper ready:
I've been working on it on and off in my spare time, but I am pretty new to all this. That tutorial you posted was quite helpful so my thanks to whomever wrote it and to you for posting it.
Ideally I want to break the limit of the current text blocks(PSI3 segments which is what is shown in my last post) so we can have a fuller translation. As it is now, each text block links to the others either by an index number to an array of pointers or a pointer of it's hex location. Still investigating that. If for instance, you take one segment, say the mine entrance right after the intro, and replace it with another. As soon as you leave after fighting VE it will warp you to the new location instead of the mine. In my case it was from there to the shop in the first town. If I walked out of the shop then, it took me outside into the town as it normally would. This tells me that the locations that they lead to aren't linked to the current text blocks location in the game file. If we were to pull out all the text blocks, put our full translation in and put them back in, they would run out of room. Sort of like putting 4 rectangles where 4 squares are supposed to fit. The way to fix this is put them in as normal and once we run out of room for the next one to fit, move it to free space and adjust the pointers as needed for all the text blocks. With luck it will be some sort of array, but I'm not sure honestly. I have located a value that if changed links to various locations and battles but more investigating is needed.
As for the max rom space issue of 32mb, I'm not sure how close we'll come to that. I forget how much free space was said in the other thread. Something like 280kb? I'll have more on that situation soon I hope.
I'm gonna include the program I use to dump the text blocks as well as a .bat file to use with DSDecmp: https://code.google.com/p/dsdecmp/downloads/list
Just unzip to a folder with "sn3.gba" in it.(without the quotes). Doubleclick dumptexts.exe and it will dump the encrypted texts to the folder "output". Their names will be in the form of "decimal_hex". Then, with DSDecmp.exe in the original folder, doubleclick dsdecmp_folder.bat and it should make a folder called output_dec. Those will be the decompressed ones as shown in my last post. They include the original script, events, etc, albeit in a fairly unreadable form except for the actual script. For those of you who wish to see the code of dumptexts.exe, it's in src. You'll need GCC to compile most likely. I plan to include any programs/tools I create and their source as I don't want my progress for better or worse to be lost if something beyond my control should happen, lol. Beware I have some experience with C, but am certainly no expert and use google quite often.
If any questions/comments/tips/criticisms, etc I'll try and be more active here to see them. I can't promise I'm the answer to what you've been looking for, but I'm willing to try and help, lol. My apologies for the late response as well as the text-wall.
p.s. Offsets.txt will be created as well. It's just a list of all the starting locations of the compressed segments in hex. Also, not all the txt files will be story dialogue. Some are just empty rooms or lead to battles and such. Also, some might be two different parts of one location. For instance, in the first game I had one for the intro dialogue and one for map items. ("...may..." cutscene for the dialogue and in a separate text for picking up the entrance ticket as well as the placement and teleport location of the stairs)