I would more than happily be willing to work on something like this. I have some basic knowledge of Unity and I took game making classes. I have a fair amount of experience in Maya, too, so I began creating a mesh for Klonoa's house.
It says so in the video but please keep in mind these textures are not final. They were only made to better show off the mesh and give at least a vague idea of what it will look like. And again, the mesh is nearly complete aside from some details on the roof.
As far as sprites go, I'm not exactly sure what was being asked? I began some sketches of the basic game animations to later turn into pixel art (not overwhelmingly detailed, but enough to be esthetically pleasing)
But if pixel art was not wanted, please alert me before I put my time into it, as I only have one week of vacation left.