I'm making progress with combining directory request statistics from multiple relays for estimating daily user numbers. I asked the operators of fast relays to turn on the relevant two config options (DirReqStatistics and ExtraInfoStatistics) to collect these stats and include them in extra-info descriptors. I hope to have results from combining statistics of our fastest relays in two weeks from now. I'm positive that we're going to find _some_ way to combine these statistics. What is the process for changing the default for all 0.2.3.x and possibly 0.2.2.x relays to turn on directory request statistics by default? I prepared a patch based on master that changes the defaults. It's branch dirreq-stats-default in my public repository.