Maybe, but it of limited use for most CAD problems - "standard" visual sketch-and-extrude systems are MUCH easier to use for 99% of things you'd want to model.

Maybe, but it of limited use for most CAD problems - "standard" visual sketch-and-extrude systems are MUCH easier to use for 99% of things you'd want to model. Exceptions are highly repetitive and mathematical objects like gears, CNC art, fasteners and so on.