I thought this, you got the graphing engine + webpage, you got a ping utility, so why just simply don't marry them together to a convenient graphical ping tool (with to-address, packet size, timing and maybe fragmentation settings)? That would be very, very useful for many setups, including those semi-faulty links, when you just can not sit down and watch pings all day to catch the faulty moment.
Thank you in advance!
P.S. What about saving history of events detected by netwatch on IP up/down and graphing uptime/downtime in rOS too?