I finally finished the app to easily create PS2 CONFIG files, I named it PS2 CONFIG editor :

For now, it only write CONFIG files perhaps later i'll add the possibility to read one.
I think i'll integrate in MGZ only the comands without paramters, like it's done in the tab "simple" of the exe

This update brings about various welcome changes that improve the game experience such as:

Ability to save and load games (thus making it more of a game)
Bug fixes (especially with GPU crashes)

Loading/Saving mechanism
Some shading effects added
1024×1024 textures took place 64×64 textures for walls in order to provide a better look
Menus were reworked
You may now skip engine logos at startup by pressing START

Be aware that it does not fix the table of contents when it encrypts a decrypted XP.INT file.
If you want to make your own XP.INT file, give the app a headerless binary, so it generates a new header/TOC.
Example of a headerless binary here, with a UK Xploder v4 file I translated to french : SAMPLE.BIN

EDIT : Sorry, I accidentally hit the "PS1 Resource" prefix :/ ...