This looks promising, however for now at least I reverted to switching off the application and system logs per node. I created a profile and stopped these connectors but the next node I added to the profile continued to pull them in.
Does it perhaps take a couple of minutes for a profile to apply? I must say I reverted using the profile after about 30 seconds I saw the second node still showing these logs as active. I will however try again using two nodes that I know to be "less chatty". I do wonder if the profile settings on apply to the options within each connector e.g. Alias, Output, nDepth Port etc.
Lastly and this is probably my lack of understanding, I found that when editing a node from the Cog > Connectors option to stop these logs they were again active after a node reboot. This time I've switched them off by double-clicking the node and used the On/Off switches under "Node: Connectors Applied" hopefully these will stick.
Reminder we're on v6.1.0.