It is not clear to me what is the role of MQTT in a general framework as HyperStream.
I understand that the original reason is because of our internal use in an Internet of Thinks environment where communication is driven by MQTT, but this requirement may be a barrier for the general user.
Would you think it should be activated optionally or change it to a plugin?
If it is really a required part of HyperStream, we should advertise it in this context then.