I may be living in dreamland here but.......when moving parts on the nest (almost every job) to get a better yield,  due to some of our parts being different sizes by a few MM, and human error, its very easy to missplace some parts when selecting what edges to associate them to. the result being that the tool will clash with the adjacent part. sometimes this is obvious and spotted imediately. other times not.  but the result is having to re cut both parts.    

so any kind of indication that the "space between parts" has been breached after updating the nest would, imo be a fantastic bit of help.