I would definitely be willing to pay for an add-on that would offer a versatile, non-destructive implementation of Signed Distance Fields modeling / coloring inside Blender.
Here’s a method using Marching Cubes in Geometry Nodes:
https://twitter.com/erindale_xyz/status/1513463517571080195
It might work a lot faster if OpenVDB would be used.
MagicaCSG could serve as an inspiration: