Something like this would be really nice to have, would have a live count of active buildings. I'm no coder, just putting it out there.
not sure exactly how this would be implemented but as long as it is possible to pull this data from PaStats it is doable, talk to @Cola_Colin
Well you could do that in your client by using the alertsmanager and count the created/destroyed events. That's basically what PA Stats does.
