Currently there's a large client library: mongodb-driver-core. My suggestion is to split it into 2 - moving out the com.mongodb.client.model package into a separate module.

The reason I need (and hopefully it's not just me) is because I'm trying to work with a software that allows passing a MongoDB JSON query as part of the request. But it then passes it to the actual Mongo instance itself. We don't have to connect to Mongo ourselves. It would be nice to have a library with all the eq() and the rest of the functions that we could use to then serialize into JSON. At the same time I don't need any connection-related classes since on my side I don't really connect to Mongo directly.