It stuffed with features:

  * OpenSCAD like modeler
  * with GPU support everywhere
  * various parameters for support/infill/...
    cannot only be defined for layer ranges
    but also as vector fields
  * experimental slicing features not seen anywhere else
    e.g. 'cavity': makes parts as hollow as
          possible while keeping them printable
    or 'wings': support that avoids the part itself
    or direction agnostic infill patterns,
    ...