>This question perhaps could be asked for other tools as well like NPC_Tool, PattView, EZ_DLC.
It's possible. That's one of the reasons I started the PattView technical information topic. Most of the inner workings of PattView are described there, so an ambitious coder could take it and replicate it on the Wii. I don't see much of a point, but I guess it would be cool to have a PattView homebrew application on your Wii.

P.S. I stole DsPet's reply style. I like it