I just added 4 glances integrations for 4 of my home servers (I have a couple of other computers but I got fed up) and had to manually organize about 120 sensor since they all get called Glances XX and I had to go in to each sensor, rename it, add an entity name that made actually sense and put it in the right area. I also have one rpi-zero in each room and to setup Glances and configure HA would probable take rest of the summer for them.
I suggest that each Glance instance should create a device (or more) with all sensor. This makes sense since each glances instance is one computer/server.
This will make management of the sensor go from madness-inducing repetitive work to about 1 minute.