Essentially, this tool turns three 2D projections into a 3D model and then adds a pixel art finish through post-processing. It seems perfect for quickly generating pixel art across multiple projections, and elunvar might bring it into his 3D pixel art editor.
If this prototype looks familiar, you're probably thinking of Oroshibu's Aseprite plug-in, which, fingers crossed, we hope will someday see the light of day: