Looks cool. Instrumenting at the network layer is certainly a promising approach. Are you recording latency distributions, and not just averages? The screenshots only show mean and median latency, which isn't enough to spot many anomalies.
Right now we maintain few select percentiles from the latency distribution over 1 min time-period. We plan to maintain latency histograms which will allow you to look at latency distribution on arbitrary time intervals.
