Finally I have added to the plugin the unpack methods for SPF, SPD and SPL (they are the same) files. Here it's:
http://dl.dropbox.co...e/INAZUMA11.dll
I think that now you can unpack all the files and see all the images. (I haven't test it so much, so if you found any bug, please tell me).
Ooh nice... I can say this works very well with IE3 The Orge and I'm able to see most files... (still no luck at those cutscenes though xD), but as for IE2 Fire, when I unpack the pac_ files, it shows up another file which is also a pac_ file but it won't me unpack it unlike what happens when I go through the IE3 files following what you mentioned earlier. (when I go to data_iz/pic2d/ending).