the next DS that would have 1152 ways of using it possible (many are redundant or useless but it is up to that number) because there is : 6 handlings (3 rotations and 2 flips) 4 cover positions (over one of the 3 screens or on the back) 4 camera positions (2 cameras than can be in 2 ways) 3 screen positions (0° closed 160° normally opened 360° fully opened) 2 tactiles (finger or stylus) 2 playings (single or multi, it can really be a different way using the transparent screen) 6x4x4x3x2x2=1152 ways
it can be used with or without the terminal too Nintendo Terminal Fusion idea but that is mostly why there is a 3rd rotations (to use it like a wiimote)