О смысле всего сущего

это вы, простите, сами придумали? в патенте про гигагерцы и "еще одно via соединенное с землей" не говорится совсем -> http://www.patentgenius.com/patent/8086991.html
суть в том что в плотном дизайне не надо искать куда воткнуть via - программа подберет удобное место автоматически, исходя из знания топологии:

When connecting between two conducting layers or between a conducting layer and the pin of a device, a via or contact structures must be inserted to make anelectrical connection between the two. Finding the locations of these connection areas by visual inspection can be very time consuming and error prone for the circuit designer, especially if the circuit contains many components and connections. Oncefound, creating the via or contact structures to make a connection is also very tedious and error prone. To a circuit designer, it is advantageous to automate the creation of the via structure procedure as much as possible.