Hello nbalint.
Im not sure if I want to turn Pixzels into a 3d tool... My dream is to create a painting pixelart tool that creates pixelart keeping the painting feeling (Paint, erase, selection...) like a Photoshop or Aseprite but on 3d... As a pixel artist, I enjoy painting, not modelling.
Besides of that, the 3d exporter will be looking like a blocky mesh kind of a voxel model... Not sure if users are looking for work on voxel models.
Still considering options... Many Thanks. :)