@Chipp
it's funny as same technology emerge in the same time on the same prog! :)
Seems SpeedFlow has the same paradigm. "No destructive polygons building" all stay editable.

Am I wrong ? SPeedFlow Companion (2 Addons in the same package) - by a French forum friend - the accent ;)
https://pitiwazou.artstation.com/pages/speedflow (big video who show all aspects - see*2 spedd for a better accent! ;)