As you can tell my Design was heavily inspired by this. I don't know if it really improves the Z-wobble but it definitely looks better without the rod hanging in mid-air.
Things I did different:
- Moved the hole for the Z-rod right, so that it no longer bites in while printing at Z-heights near max.
- Inset the screw holes, that connect it to the knockoff open build extrusions to make it look nicer and give me more confidence into that connection because the original screws are way too small for the original part.