I know we’re been focused on the expansion for a bit, but lets look at getting fancy: multiple extruders with a water soluble support filament such as BVOH.
Prusa makes a good multi material printer, but I know there’s lots out there.
I believe 3D fan is getting a Palette. Since PVA has a similar melting point to PLA, they could be combined using that machine.
I have Prusas. The Polyprinters are probably more sturdy and reliable, even if they are 3x the price and with a lot less fancy features. It also doesn’t have the dual extruders needed.