Where FreeCAD ought to be able to take over is in the things that are a bit more complex that OpenSCAD just doesn't have the tooling for. Multiple-part assembl

Where FreeCAD ought to be able to take over is in the things that are a bit more complex that OpenSCAD just doesn't have the tooling for. Multiple-part assemblies is one of them that immediately comes to mind, now that there's some reasonable FreeCAD functionality for it.