The SketchUp team are always sharpening their "heuristics", the ins and outs that make SketchUp quick and precise. In SketchUp Pro 2017, the Offset tool has been improved.
The new Offset tool avoids overlapping and self-intersecting geometry. Clean offsets, every time you hit 'F' (even in LayOut!). Take a look at our video which demonstrates the offset tool at work.