It could be possible, I could handle the 3D-Mesh / Texturing part, all you guys need is someone who can import the edited stuff back ingame, I mean I found some coding for some tools used to extract the 3d meshes and unpack the game, maybe with some reverese coding someone you compile the new stuff ingame, just a thought
We'll look into it. I already have a repacking tool however it is only capable of replacing files not adding new ones. So would have to replace a dogi in its place.