Good point... I wonder why these are not implemented (Midi Vol & Pan), but maybe the hardware is just not designed for it (well in case of the MicroFreak it has a mono output, so pan is out of the question there anyway. I guess it could added to the VSTi though and there are workarounds, when working in a DAW... )
Nonetheless, I think the MicroFreak and MiniFreak are really awesome little machines (particularly at their price point) and a VSTi version of the MicroFreak would still be high on my wish list, even if I have the MiniFreak V already!