Sounds interesting, however you might want to rethink this part "You will have to create this character in detail. You will have to creat the character in 3d using programs like poser (the 3d program you use must be able to export the character to a Wavefront Object (*.OBJ). " If people are not to submit only rendered images but must send you their characters in .obj then I'm afraid only original meshes will apply since Poser cannot be used to distribute .obj's as they are original Zygote geometry.