Lighting Desks DMX > Midi or Midi out

Using lighting desk as midi controller > Midi or Midi out

Just looking through the range of reasonably priced lighting desks with uber numbers of faders and buttons and a better build quality by miles than the majority of midi controllers.

I know some DO have midi out, but generally seems to be limited to scene selection rather than transmitting the fader data.

What I was thinking is that the likes of complex macros could most likely be triggered from a pre-programmed desk at the touch of a button - interesting ?
I have seen some elaborate DMX > Midi convertors but in the $300 bracket.

Any other options out there maybe a USB > Dmx dongle and software to convert the signal to midi.

Ideas people Ideas

BTW .. some of the desks in question (all under 200 bucks!)

http://www.thomann.de/ie/elation_stage_setter_24.htm
http://www.thomann.de/ie/showtec_lite_8pro_controller_dmx_512.htm
http://www.thomann.de/ie/botex_dc_2448_light_operator_b_stock.htm