

Apologies for the delayed reply, it’s been a week.
Vorons are capable because the base design is pretty good out of the box and because the design is open source. As other companies come up with cool ideas you’ll usually see a mod to adopt them to a Voron. It wouldn’t surprise me if this idea is adopted. Until very recently, things like hot ends were commodity parts made by third parties and not the printer OEMs. This made part availability fairly guaranteed and also feels more open. The good news is that it looks like Bambu will sell these parts at some point.
As for existing options in Voron land, there three popular mods out there for multi-toolhead: StealthChanger, TapChanger, and Mad Max.



What OP meant was volumetric flow, not the extrusion multiplier. Volumetric flow caps the volume of plastic the slicer will ask your extruder to deliver per second. Fiddling with this value can help prevent under extrusion.
What you did by reducing speed is similar, but you could run into issues if you were to modify extrusion width or layer height.