These projects are like patches to cover up something you don't like to see. Replacing the system would mean collaborating on the KWin code so that future versions improve, and none of these options do that. In the end, KWin will release an auto-tiling system, and it is doing so slowly. Perhaps it will adopt Fluid Tile as an option, since half the work is already done. The same thing happened with SDDM and plasma-login KWin will evolve and is here to stay. Creating a script that covers up things you don't like will only result in the script becoming outdated over time. It's like if you have damp on a wall and you try to cover it up with a picture. The damp will continue to grow if you don't fix the wall from the inside, and the picture will stop covering the damp and will no longer serve its purpose.