Prusa Z axis, the best AND the simplest !

Owners of a Prusa Geeetech Al who have carried out all the mod I published here, mainly the Z axis, ( http://www.thingiverse.com/thing:1830451, https://www.thingiverse.com/thing:2504861 ) are the proud owners of the best Prusa, no wobble, noise, vibration, fast, accurate AND simple.
See my other things (bearings, filament guide ...as they are used here).
But could it be made even simpler by getting rid of the Z smooth rods ?
"Good news everyone" (Professor Farnsworth) it can !
Indeed, the TR