Creality printer mods

The Creality 3D printer is a clone of Deezmaker's excellent Bukito 3D printer (which I also own one of). While the Creality improves upon the Bukito by providing an LCD interface, it is mechanically inferior in several ways

1. The vertical tower in the Creality is held to a horizontal extrusion by a very small corner bracket. There's little to prevent the tower from twisting forward. The Z stepper motor helps to resist twisting backwards. The Bukito firmly secures the vertical tower in two perpendicular planes to the custom bottom plate.
2. The belt paths are not kept in the same plane as the motion of the X and Y carriages.
3. The X and Y idler supports in the Creality are not adequately stiff and introduce additional ringing, albeit negligible at low printing speeds.
4. The Creality's hot end uses a PTFE liner all the way to the hot nozzle. The PTFE will degrade over time and require replacement. Further, this limits the printing temps which can be used to below 240C. It