Steps to reproduce:

1. Create packer loss widget
2. item ICMP loss
3. Aggregate function avg()

Result:
The result is not a useful widget and the reason for that is that if packet loss is at 100% a device is down. But i already have events for hosts that are down. The widget is only useful if i see an actual packet loss on devices. When i have 100 down devices the widget is not useful at all as it is filled with down devices. 
Expected:
I would expect to be able to somewhere set a threshold for this and say list any device that has packet loss up to some percentage like 90% or 95% which is not entirely down and unreachable but is in fact experiencing heavy packet loss.