I didn't take the time yet to have a proper look at it, but nothing stops you from doing batch REST operations on collections. You can do compound documents - w

I didn't take the time yet to have a proper look at it, but nothing stops you from doing batch REST operations on collections. You can do compound documents - with references - à la jsonapi.org. One thing I would consider essential though, is using RFC2518 MOVE, COPY etc, you really want to do those server-side. Do you have an example of the type of operation that would map poorly to REST?