*WARNING WALL OF TEXT!!!
Just did a quick google search, (you probably have all this info already)
Also you posted in the right forums, if any1 has the knowledge they will more than likely chime in.
Maybe post on the skies of arcadia reddit also?
If you could find TuxTheWise he might be able to help?
Too bad the pso forums are gone, there were some talented modders that were good at creating scripts and applications to extract/archive/compress/etc models/skins. The format was obviously different but they had the skills to create the tools from scratch. I think it was .nj and .njm or something like that? maybe try using webarchive and searching pso forums?
Is there anything in the beta that could be added to a mod of the full version?https://hiddenpalace.org/Skies_of_Arcadia_(Nov_15,_2000_prototype)
My old post LOL:https://segahub.org/index.php?topic=5366.0
MLD is a filetype used exclusively in Skies of Arcadia/Eternal Arcadia/Legends. Legends still uses MLDs, but they are encrypted with AKLZ encryption, an encryption used exclusively in Legends. This is part of why certain tools only work with the Dreamcast versions while some tools only work with the Gamecube versions. MLD files are like a bundle of information that can include a lot of things or very little. This includes 3D models, rigging/skinning information, UV layout, diffuse textures, alpha maps, animation data, and more.
Sprite/texture dumping in Dolphin is a very simple process. Here is how it's done:
Click on "Options", and then "Graphics Settings" from the drop-down menu. Make sure you have the right graphics card in order to view the game.
In the Graphics Configuration window, click on the "Advanced" tab, then check the "Dump Textures" box.
Close the window, then select and launch the game you want to rip from.
Play up to the point that has the sprites or textures you want to rip. Once you get everything you need, close or pause the game.
Now go to Documents\Dolphin Emulator\Dump\Textures\[game ID]. View files by Large Icons or Extra Large Icons, and sort by Date Modified. This will help you find what you need easier.
Open Noesis and browse to where the files are located.
Double-click on a model file to open it. The model should appear in the window, and if available, its animations will also be playing.
Right-click on the file of the model you just opened, then choose "Export" from the drop-down list. A dialog window should appear.
Choose the formats you want to export the model and textures as, choose the directory you want to extract them to, check the "No animations" checkbox (optional), then click the "Export" button. Once it is finished, you should get a message saying, "Export complete." Click the "OK" button, then click "Close".