I want to ask for the option to use PVA (or other water soluble filament) only for selectable amount of top and/or bottom layer of the support structure. See my sketch picture attached.
This will have huge improvements:
+ Time: Less printing time due to less extruder change
+ Costs: Reduce amount of required (more expensive) PVA filament
+ Quality: Less PVA/PLA or PVA/ABS pollution for the layers where PVA usage is avoided