I believe parameterized cascade can help you.
It’s added to master, I have no idea if it’s in Slash yet.
Checkout: Parameterized Cascade
Currently
@cascadedirective does not take any parameters. This means that, for a node, all its children in the sub-graph must be present for it to be part of the response. The directive is implied at all levels from the level it has been declared.
This is too strict for use-cases where@cascadeneeds to be done only on some field/children and not all.
P.S. I don’t know if, it will be equivalent of OR logic! 