Reply to DIY 14 Bit Midi

I'm looking at designing my own midi controller and I'm interested in finding out more about 14 bit midi. Hi-resolution faders and pots for everything just sounds super sweet to me. I can see that the Vestax VCI-300 and the Xponent both use this technology - and importantly that traktor can use it - but I can't seem to find much info in terms of midi DIY kits. Can anyone help me?