Remove "Fraction of relays reporting onion-service statistics" graph after August 15
When we added graphs on onion services back in March 2015, we also included the "Fraction of relays reporting onion-service statistics" graph.
Back then, this graph was somewhat useful for pro users, to see how onion-service statistics deployment proceeded over time and to assess how much we could trust the overall numbers. However, since fractions went up to 50% in 2016 or even 75% in 2017, this graph has become less relevant.
Also, when we added this graph in 2015 we still had an "advanced/pro" category of graphs that were not displayed by default. We don't have that distinction anymore and simply throw everything we have at our users.
I suggest we remove this graph now from Tor Metrics. It costs maintenance effort, and it distracts our users from the more important graphs.
We could (should?) even keep providing the data by including a
frac column in the CSV files linked from the other two onion-service graphs. That's how we do this with the user number graphs. If somebody wants to graph fractions of reported statistics, they can easily do that themselves using their favorite graphing tool.
Thoughts? Are there any good reasons to keep this graph?