At the moment you have plugins for Kafka and RabbitMQ/AMQ.

NATS is a platform that is getting increasingly widespread adoption as an easier to deploy and manage alternative to Kafka and Rabbit.

It would be fantastic if you had support for NATS.

Whilst NATS does have MQTT support, it is only there as an "enabling technology" for integration with legacy IoT deployments. The NATS recommendation is to use NATS throughout and not rely on the MQTT bridge for greenfield deployments.

There is an official C library for NATS.