I'm sure the intention is to keep the zoomed-out view as simple/clean as possible, but I agree that can give the impression 15 devices are offline (in the zoomed-out view) even though it's only 1 device. I will investigate if this is something that might be in the works, or if they need a feature request I'll get one created. It would be nice if when I hover over the red circle with the "15" in it, I at least get a pop-up with the number of online/offline device counts. Like when you're zoomed-in and hover over a device, you see a link to the device, it's recent usage, # of clients, camera thumbnail image, etc.
When zoomed out, I'm thinking multiple bubbles might get messy. I'd like to see either multiple numbers in a single bubble perhaps with a "online/offline/alerting/dormant" format, or perhaps a single number like it shows now, but hover over it and see a pop-up with the breakdown of each status. Thoughts?