I've implemented and defined design systems
A big part of my Guardian role involves translating our wider design principles into a suite of assets for video.
The goal was twofold, firstly, create graphics to help video producers clearly communicate, secondly, reinforce the Guardian identity.

The project was created under tight constraints: work within the overall design language of the Guardian; work with very tight technical constraints; fit into video producers existing workflows; create easy to use documentation; work with multiple stakeholders; and create variations for multiple types of content (news, sport, original film, etc) and for several different video dimensions.
I am sure Google motion designers face similar constraints and challenges too – I would love to get involved.