The following might influence some people's choice of which NoSQL approach they choose:
https://wiki.eclipse.org/EclipseLink/Examples/JPA/NoSQL
Some kind of ORM implementation or contribution to an ORM framework for ArangoDB would make it much more appealing.

P.S. Since they've managed to do this for MongoDB, which doesn't have a QL, it should be very much doable for ArangoDB.