The choice of sites to ping is predicated on how one wishes to use the data. Measurements Other Than Ping DNS response is already separated from the ping performance. Does one want the DNS performance and if so how does one get it, e.g. which name servers is one measuring the response to etc. It was agreed that this should be a separate future project. Getting http get response times is a future goal.
Quality of service related data is a future goal.
It was agreed that to enable this we should set up reverse traceroute servers at the major sites and also recommend them at the remote sites, and publish the URLs. Long term to understand what the routes, look at the pathologies, see route changes etc. The analysis is quite a challenge. This would give an indication of the predominant route. Also since it probes routers it might affect the router performance and network more than pings.