We have something like above in Sketchup! ;)

free Component Replacer by Thomthom http://sketchucation.com/pluginstore?pln=tt_component_dropper
(takes any selection component (s) even different (s) and replaces them with their sizes by a new! )
like by SuForYou but not free! (15 free day trying and after 15 $)
http://extensions.sketchup.com/en/content/s4u-components



I should use free Solid Solver by TIG for intersections volumes cleaning!
http://sketchucation.com/pluginstore?pln=TIG_solidsolver )



Some fractal delirious! :)