Fault tree diagram ? Is there anyway suggestion?

Hi guys,

Just came across this and i find this incredibly useful in our application.

While i am still new to GoJS, can this fault tree layout be customized to…

  1. Can this be extended to have some sort of poly tree representation, where a child can have multiple parents? Similar to Node 19 in the attached image?

  2. Have custom gate graphics? We plan to have more than AND and OR gates.

Thanks,
Harsha